“Three” Schoolhouse Rock
“Eight” Schoolhouse Rock
“2112” RUSH
Darn - you beat me with 2112 (my nomdeplume!)
But here’s a live version from 1976:
https://www.youtube.com/watch?v=NJPAjiSX7Rk
And for another RUSH song with numbers, flash forward to live version of “Body Electric” from 2012.
“1001001 SOS”
https://www.youtube.com/watch?v=YpMJDj4pXNM