That app sings "99 bottles of beer on the wall..." and you can change the speed and pitch of the voice. You can also define any number instead of 99 that is from 0 to 999,999,999,999,999! 99bottles will happily sing away until it either runs out of bottles, or you run out of patience!
Both the older version (v99b - 1990) and a later version (v99b4 - 1992) are available as download.
99_Bottles_v99b.sit (163.28 KiB / 167.2 KB)
99bottles older version (v99b) - 1990 / compressed w/ Stuffit
99_Bottles_v99b4.sit (195.36 KiB / 200.05 KB)
99bottles later version (v99b4) - 1992 / compressed w/ Stuffit
Mac OS 6 (probably) - Mac OS 9.2.2
At least 666KB of free RAM
Emulating this? It should run fine under: Basilisk II