t*(t/65536&t>>8)|t>>(t/(t*0.25))|50000/(t&4095)|t>>4

(((t*(2&t>>13?7:5)*(3-(3&t>>9)+(3&t>>8))>>3-(3&t>>(t&4096|(t>>11)%32>28?2:16))|t>>3)&255)/2+((1e5/(1+(t%4096)))&127)*2+(t*(2&t>>13?7:5)/8&64)*2*(t>>11&1)+(t*555^t*167)/15%128*(255-(t>>3&255))/256/3*2)/2

((t * 8 * (((t >> 12 & 1) * 0.2 + 1) * (((t >> 13) + 1) & 1) + (t >> 13 & 1) * (1.35 + (t >> 12 & 1) * .15))) ^ ((((t * 2 ^ t * 2 >> 12) * t * 2 >> 8 | t * 2 >> 10) & 255) * (t * 2 / 1024 | 0) & t >> 8) * 9 / 7)

t/=4,t%=1048576,BPM=150,SAMPRATE=40960,T=t/SAMPRATE*BPM/60*16384,kick=abs((sqrt(T/(2**[4,4,4,2,4,4,4,3][(T>>12)%8])%256)*512&255)-128)/128*127,hb=t*[[0,0,1,0][(T>>10)%4],[0,0,1,0][(T>>10)%4],[0,0,1,0][(T>>10)%4],[-1,1,-1,1][(T>>10)%4]][(T>>12)%4]*sin(T*2>>1)&128,randomthingy=sin(t*[0,0,0,1,0,0,0,0][(T>>11)%8]*PI/64)*128+127.5,beat=(kick*4+hb+randomthingy)/3,low1=t/2*2*[1,1,2,-2,1.8,-2,2,-2,1,1,2,-2,1.8,-2,2,-2,1,1,2,-2,1.8,-2,2,-2,2.4,-2.4,2,-2.4,2.7,-2.7,2.4,2.7][(T>>10)%32]/2&127,low2=t*[1,1,2,-2,1.8,-2,2,-2,1,1,2,-2,1.8,-2,2,-2,1,1,2,-2,1.8,-2,2,-2,2.4,-2.4,2,-2.4,2.7,-2.7,2.4,2.7][(T>>10)%32]*[1,1,0.8,0.75][(T>>14)%4]/2&127,high1=t*[1,1.125,1.2,1.35,1.5,1.5,2,1.8,1.5,1.5,1,1,1.5,1.35,1.2,1.125,1,1.125,1.2,1.35,1.5,1.5,1.35,1.2,1.125,1,1.125,1.2,1.125,1,0.95,1.125,1,1.125,1.2,1.35,1.5,1.5,2,1.8,1.5,1.5,1,1,1.5,1.35,1.2,1.125,1,1.125,1.2,1.35,1.5,1.5,1.35,1.2,1.125,1.125,1.2,1.2,1.35,1.35,1.5,1.5][(T>>11)%64]*4&127,medium1plusbeat=((low2+high1)+beat)/2,medium1=(low2+high1)/2,high2=t*[1.8,2,1.5,1.35,1.5,0,1.35,1.5,1.8,2,1.5,1.35,1.5,0,1.35,1.5,1.35,1.2,1.125,0.9,1,0,0.9,1,1.125,1.2,1.35,1.5,1,0,1.5,-1.8,1.8,2,1.5,1.35,1.5,0,1.35,1.5,1.8,2,1.5,1.35,1.5,0,2,2.25,2.4,2.25,2,1.8,1.5,0,1.35,1.5,1.35,1.2,1.125,0.9,1,0,1.5,1.8][(T>>11)%64]*4&127,low3=t*[1,1,2,-2,1.8,-2,2,-2,1,1,2,-2,1.8,-2,2,-2,1,1,2,-2,1.8,-2,2,-2,[2.5,2.4][(T>>15)%2],-[2.5,2.4][(T>>15)%2],2,-[2.5,2.4][(T>>15)%2],2.7,-2.7,[2.5,2.4][(T>>15)%2],2.7][(T>>10)%32]*[0.8,0.9,1,1][(T>>14)%4]/2&127,medium2=(low3-high2+128)/2,medium2plusbeat=((low3-high2+128)+beat)/2,thingyatmedium2=(T>>13&1)*t*20*[1,41/40][(T>>6)%2]&31,song=([beat/2+random()*128*1/2**(T/8192<8?T/8192:1048576)+randomthingy/3-16,beat/2+low1,medium1plusbeat,medium2plusbeat,beat/2+low1+random()*128*(-T/1024&127)/128+randomthingy/3-16,medium2+thingyatmedium2,beat/2+low1+random()*128*(-T/1024&127)/128+randomthingy/3-16,medium1+thingyatmedium2][T>>17]),(song<255?song:255)>0?(song<255?song:255):0

BPM=172,SAMPRATE=47000,T=t/SAMPRATE*BPM/60*16384,fd=(x,y)=>x%256*(y&2047)/2048,bass=t*[1.2,1,.8,.9][(T>>18)%4]/4&127,bass2=t*[.8,.9][(T>>19)%2]/4&127,high=t*[1.5,1.5,1.2,1.125,1.125,1.125,1.2,1.2,1.5,1.5,1.2,1.125,1.125,1.125,1.2,1.2,1.5,1.5,1.2,1.125,1.125,1.125,1.2,1.2,1.8,1.8,1.8,1.8,1.6,1.6,1.6,1.6][(T>>13)%32]&127,A=32768,kick=((sqrt(T%(A/2**[-1,-1,,,,,,,,,2,2,,,,,2,2,2,2,,,,,,,2,2,,,,][(T>>12)%32]))*64)^(sqrt(T%(A/2**[-1,-1,,,,,,,,,2,2,,,,,2,2,2,2,,,,,,,2,2,,,,][(T>>12)%32]))*16))%256*2|0,snare=fd(sin(t>>4)*t&128,-T/4)*[0,0,1,0][(T>>13)%4],hihat=fd(sin(t>>2)*t&128,-T/4)*(1+(T>>13&1))/2,beat=kick/2+snare+hihat,medium=t*[1,1,1,1,1,1,1,1,1,1,1,1,1.2,1.2,1.0625,1.0625][(T>>14)%16]*1.5/2*[1,1,0,0,1,1,0,0,1,1,0,0,1,1,1,1][(T>>14)%16]&127,song=[beat/2+bass/2+high/2,beat/2+bass/2+high/2+medium/2,beat/2+bass2/2+high/2,snare/2+hihat/2+bass2/2+high/2][(T>>20)%4]/1.1,throwfunc=x=>T&1023?0:(()=>{throw x})(),throwfunc("Surf Freaks (recreation by ChrisRM_380) \n bar: " + ((T>>20)%4) + " of 4\n bar progress: " +((T/512&2047)/2048*100|0) + "%" + "\n song progress: " +((T/512 / 4&2047)/2048*100|0) + "%")+min(max(song,0),255)

BPM = 200;
hB=(t,T)=>t*[1,0.9,1,1.125,1.2,1.125,1.2,1.35,1.5,1.35,1.6,1.5,1.8,1.6,1.5,1.6,1.35,1.5,1.6,1.8,2,2.25,2.4,2.7,1.125,1.2,1.35,1.5,1.875,2,2.25,2.4][(T>>13)&31]*(1+(T>>18&1))*2,
B=(t,T)=>t*[1,1.2,1.35,1.5][(T>>16)&3]*(1+(T>>18&1))
function wG(type,m) {
	switch (type) {
		case 'sin':
			return sin(m*PI/2)
			break;
		case 'squ':
			return (m&2)-1
			break;
		case 'tri':
			return abs(m/4%1-.5)*4-1
			break;
		case 'saw':
			return (m/4%1)*2-1
			break;
		case 'rand':
			return random()*2;
			break;
      case 'xor2':
         return ((m*128^m*64)%256)/256;
      case 'xor3':
         return ((m*16*3^m*16)%256)/256;
      case 'xor4':
         return ((m*128^m*32)%256)/256;
      case 'xor5':
         return ((m*16*5^m*16)%256)/256;
      case 'xor1_2':
         return ((m*32^m*64)%256)/256;
      case 'xor2_3':
         return ((m*96^m*64)%256)/256;
      case 'xor3_2':
         return ((m*96^m*64)%256)/256;
      
      case 'xor3_5':
         return ((m*48^m*80)%256)/256;
      case 'xor3_4':
         return ((m*48^m*64)%256)/256;
      
		case 'wavtabl1':
			return (wave=[1,-1,-1,-1,1,1,-1,1,1,1,-1,1,-1,1,-1,-1,-1,-1,1,-1,-1,1,-1,1,1,-1,-1,1,1,1,1,1,1])[m&31]
		case 'wavtabl2':
			return (wave=[1,1,0,1,0,0,0,1,1,1,1,1,0,1,1,0,0,1,1,1,0,1,1,1,1,1,1,1,1,1,1])[(m&wave.length)%wave.length]*2-1
		case 'wavtabl3':
			return 'blank'
	}
}


return function (t,sR) {
	mT=t*40960/48e3;
	sT=mT*sR/150*BPM;
   return wG('xor5',hB(mT,sT)*sR/64)/2+wG('xor2_3',B(mT,sT)*sR/64)*(sT>>13&1)-1
}

BPM = 160
class Waveform {
	constructor (t,type) {this.t=t,this.type=type}

	play(hz,loudness=128,duty=64) {
		switch (this.type) {
			case "squ":
				return (((this.t*hz*128&127)+duty&128)/128)*(trunc(loudness+1)/256)
			case "tri":
				this.wav = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]
				this.wav = this.wav.concat(this.wav.toReversed())
				return this.wav[this.t*hz*32&31]/16-.5
		}
	}
}

function noteToHz(n,A=440) {
	return A*2**(n/12)
}


// i know you were prepared for this
function setUpFilter(t) {
// 1 pole filter from feeshbread (https://www.reddit.com/r/bytebeat/comments/1f7i53w/infenitely_instantiable_1_pole_6dboct_filters/)
t?0:z1=[],
callCount=0,
lpf=lowPassFilter=(a,c)=>(
	call=callCount++,
	z1[call]??=0,
	z1[call]+=(a-z1[call])*c
),
hpf=highPassFilter=(a,c)=>a-lpf(a,c) // we only need the highpass cuz its for the dc removal
}

return function(t,sR) {
		squ1 = new Waveform(t,"squ")
		squ2 = new Waveform(t,"squ")
		tri = new Waveform(t,"tri")
		setUpFilter(t)
		sT = t*BPM/120
		return hpf(squ1.play(noteToHz([4,7,9,11][sT/2&3]-12),128,sT*32&sT*4)+tri.play(noteToHz([4,7,9,11][sT/2&3]-12,110),256,32)+squ2.play(noteToHz([4,2,-3,-6][sT/2&3]-12),256,16)/4*(sT*2&1),.009)
}

return (t,s)=>(t*=s,t*(42&t>>10)&255)/128-1

return t=>(t*=8E3,t*(42&t>>10)&255)/128-1

return (t,s)=>(t*=s,t*(4|t>>13&3)>>(~t>>11&1)&128|t*(t>>11&t>>13)*(~t>>9&3)&127)/128-1

t/=48E3,s=s=>2**(('023578'[s%7|0]||10)/12+(s/7|0)+7.5),o=(t,b)=>(O=[O=t>12&&sin(b*200)/4+(t*s('0035'[t/3&3])/4%1>t/3%1)/4*b||0,O],(T=>{for(i=0;i<9;i++)(N=t-3/8*i)<0||(n=N*s(N%3*4-(N/3&2)+7),O[i%2]+=N<132&&T(n+N%3/9*T(n/((N/3&3)+1)))*(1-N*4%1)/3*.6**i)})(t=>abs(t%1*4-2)-1),O),t>127?o(t+4):o(t>48?(a=t%1,x=t*2&7,(t/4|0)*3+(t>96?(t&3)+a-(x>3):[a,(t&3)+[a%(1/12),(a-1)**2,a,a-.5,a*3/2,a*2/3,a-1,a-1][x],[a*3/2,a,a*3/2,(a-1)**2,a,a-.5,a*2/3,a*2/4][x]][t/16-3|0])):t,t<24||(t*(t/8-13|0?2:1)%1)**.4)

n=440/40960*128*2**(3/12),

M=t/4*n*2**([4,2,4,6,7,6,7,9,11,9,12,11,14,12,11,12,9,11,12,14,16,18,19,21,6,7,9,11,15,16,18,19][t>>13&31]/12)<<(t>>18&1)+1,Mel=(M^M*7)/2%256/256-1,

Chr=Chr=>(C=t/4*n*2**(Chr[t>>16&3]/12),((C%31.96^C%32.1^C%63.9))/140-.23),Chr=(Chr([-1,2,4,6])+Chr([4,7,9,11])+Chr([7,11,13,15])/1.5)/'1131131133111133'[t>>12&15]*1.7,

Bs=(B=t/16*n*2**([4,7,9,11][t>>16&3]/12),((B%31.96^B%32.1^B%63.9))/72-.43),

K=sin(sin(6*cbrt(t%16384)))/((t%16384)+2e3)*(-t>>14&1)*7e3,

Hh=((t*random()&255)/128-1)/((t%4096)+256)*180,

Sn=(sin(asin(sin(8*cbrt(t%4096))))/1.3+(((t*sin(t>>2))&255)/255-.5)*cbrt(-t%4096+250)/24)*(1-t%4096+4096)/1e3*'00001000'[t>>12&7],

Mel+Chr+Bs+Sn*(t>2**19)+(K+Hh)*(t>2**20)

t=t/2,sin(t&t>>12)/3+sin(64*pow(16384,-t/2048%8))/2.5+random()*'1000'[t>>10&3]/3+atan(tan(t|t/1.5))/4*(-t>>4&255)/256+(atan(tan(t|t/1.5))/4*(-t>>7&255)/256)*[0,1][t>>15&1]
//july 25 2022

(t%1E4<5E3?4*t&32:128*(t%2E3>1E3)+(9/2*t&32))+(t%5E3>2500?t&32:3/4*t&32)

t-(t>>6)<<(t>>12)/t>>(t>>1+t<<t>>2)<<2

t*t>>(t>>12&t>>3)^(t>>1%t%t>>5)

t/t<<(t>>8^t^t>>2)

t^(t>>11)+t<<(t>>9&t>>10)&t<<2 

t/=4,a=random()*(3E4/(t&4095)),b=3E4/(t&4095),r=(3*t&t>>10)&127,
[b,a,b][(t>>12)&1]+r

 e=t/512,sin(e*(t&t>>12))%cos(e*(t&t>>12))

e=t/512,sin(e*(t&t>>12))*cos(e/(t&t>>12))

e=t/512,sin(e*(t&t>>12))/cos(e*(t&t>>12))

T=sin(24*cbrt(t%4096)),O=sin(24*cbrt(t%2048)),N=sin(24*cbrt(t%1024)),[T,T,O,N][t>>13&3]

x=t/64,(sin(sin(sin(x*2**(parseInt(('ABOBAI')[(t>>12)%6],36)/12)))+cos(x))*(-t>>6&127))+128

(((t/2*2**([5,8,12,15,19,15,12,8][t>>13&7]/12)*(t&262144?1:6/5)&128)+(t*(t&262144?1:6/5)&127&t>>8)*(t>1048575))*max(0,min(1,16-((t&1048575)/65536)))^(random()*128&~t>>8)*(t>2097151))*(t<4194304)

t/2/(1+(t>>17&7))**2&111&t>>12?t>>9:t>>7

t/2/(1+(t>>17&7))**2&111&t>>12?t>>9:t>>7

code

sq=(f,p=0.5)=>2*((s*tone(f)%1)<p)-1, 
s=t/48000,
b=94,
r=-1/0,
tone=(note)=>440*(2**((note-9)/12)),
q=(a)=>s%(60/a)*a/60,
F=(a)=>sin(2*PI*s*a),
st=(j)=>F(tone(j)),
bass=(k)=>asin(sin(s*2*PI*440*(2**((k-9)/12))))/PI*2,
cyc=(p,l)=>(floor(p/60*s))%l,
dec=(s,r=1)=>(1-q(s))**r,
lfo=(f,a,w,p=0,o=0)=>
[sin(f*2*PI*s+p)*a+o,
sign(sin(f*2*PI*s+p))+o,
(s+p)%(1/f)*f*a+o,
random()][w], 
sum=(Ar)=>Ar.reduce((a,b)=>a+b,0),
R=random(),
Cho=(Ar,Fn)=>sum(Ar.map(Fn))/Ar.length,
ω=(a)=>{throw a},
p=(a,b)=>a!=b?a:r,
avg=(a)=>sum(a)/a.length,
Kick=_=>F(exp(q(_)*-19)*30/s),
Snare=(a)=>Kick(a)/2+R*dec(a,2)/2,
T=(M)=>(M[0].map((_,i) => M.reduce((A, R) => [...A, R[i]], []))),
Hat=_=>R*dec(_),
Chords={Maj:[0,4,7],
Min:[0,3,7],
Dim:[0,3,6],
Aug:[0,4,8],
Qua:[0,4,7,10],
Mi7:[0,3,7,10],
Ma7:[0,4,7,11],
Di7:[0,3,6,9],
mM7:[0,3,7,11]},
output=st(">@BEGJLN".charCodeAt(cyc(b*2,8))-64)*dec(b*2,2)+bass(">2;9".charCodeAt(cyc(b/4,4))-64)/2*dec(b/4,2)// the deafult code

,

Ax=t+t,
Bx=t*t,
Cx=t>>t,
Dx=t&t,