FYI,
This is the current line-up of my band:
Phil - drums
Marc - bass, vocals
Neil (me) - vocals, rhythm and lead guitar
Tom - lead and rhythm guitar.
The band members are listed in no particular order, but I've put the roles we play in the band in the order of how much of them we do individually and within the context of the band.
EG: I sing on more songs than Marc, Marc plays bass on all songs but only sings on some, if there's a solo to play Tom will usually do it but I do a few, and so on.
Perhaps other forumites might like to explain the personnel composition of their musical projects.