The Beatles from what I have read of pop history were one of those first acts to where the band made their originals.
That has seemed to be commonplace.
I tried doing a coffee house blues standard to expand my horizons upon meeting a blues musician.
He was to put it mildly, very discouraging.
Then there are people to where if you have a quality they like, they expect you to settle and do one thing.
I am sure glad The Beatles kicked down that door.
I still can't see how one can write a song and not want to attempt to play it.
I can't read sheet music and only know how to read some tab and chord scales. I wonder how many musicians actually write a song out on paper first.

But the type of songwriting I also notice is what musicians don't tend to get credit for. What lies within the song.
Like the guitar player that put in their fill or had a certain spin to that song.

http://www.f3music.com/444