5 REM "BBC Micro Basic Random Beats"
 6 REM by Eliot Tanner
 7 REM https://www.youtube.com/watch?v=mWnDE7yv8z4
10 SOUND 1,-15,1,2
18 FOR J=1 TO 4
19 SOUND 0,-5,40,1
20 FOR I=1 TO 250:NEXT I
25 NEXT J
30 SOUND 0,-15,20,1
40 FOR J=1 TO 4
50 SOUND 0,-12,40+RND(10),1
60 FOR I=1 TO 250:NEXT I
70 NEXT J
80 GOTO 10