I dont really know, or care to know anyone's songs....
I play in an all original band, however, when we do the occasional cover... we all play in key, but play our own basslines, solos, etc. There are rare exceptions, such as "Sunshine Of Your Love" or "Born Under a Bad Sign" when I play note for note someone else's bassline.
This is totally not a dig at anyone who plays other people's music. It's simply not my forte. Ill never be one of these guys who can nail a cover note for note. I was only a fair to average player when Im playing other people's songs (back in the days when I used to play Brown Eyed Girl and all those old favorites). It wasnt until I just "played what I felt" that I became, IMO, an accomplished, respected bassist in my local music community.