Found on the internet (lyrics by Georg Cantor ; - ) ....
The world's longest song (sung to tune of "99 bottles of beer on the wall"):
"Aleph-nought bottles of beer on the wall,
Aleph-nought bottles of beer,
You take one down, and pass it around,
Aleph-nought bottles of beer on the wall...."
(...Repeat till you pass out)
[ often heard being sung by guests at the Hilbert Hotel! ;-)) ]