I love Chicago, Eagles, Paul Simon & Gurfuncle, Paul Mccartney, Zombies and many more from 60's and 70's.
Your son is a musician? Cool.
We do have threads with 60's and 70's songs. Check it out. I'll look for songs from those singers though.
No, my son isn't a musician. I have two sons and they both like to sing and have made videos singing songs they wrote. They don't play instruments, yet, although my oldest son is learning to play the guitar.
Here's one by Chicago.