BGM "remix" maker

I made a simple program that makes "remix"'s of the music by doing BGMPLAY X: WAIT Y: BGMPLAY 1,X

WHILE 1
B=BUTTON(1)
IF B==1THEN DEC S
IF B==2THEN INC S
IF B==4THEN DEC E
IF B==8THEN INC E
CLS:PRINT S,E 
IF B==16THEN BGMPLAY S:WAIT E:BGMPLAY 1,S
VSYNC 1
WEND

I didn't put this in programs because it's so simple that I don't think it's worth uploading. Use left and right to change the delay, and up and down to change the song. Press A to play the song. Try doing

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