Originally Posted by kevibass
a guitarist brings a riff or lick or whatever to the band, you lay down a bass line the drummer puts in a beat, jam on it... but... the guitarist will claim, this is his song.
Arguably, whatever you contributed to the "jam" wouldn't have been created if the guitarist hadn't originally brought in his "riff or lick or whatever" that inspired you
to contribute in the first place...so his idea was the seed, the inspiration, and to some musicians that alone constitutes songwriting credit.
But that works both ways too, so if you brought in the original lick you have just as much claim to credit even though you are just a bassplayer.