The people who Compose/Sing are
the leads and it's a good thing if
there's only 1 or 2 composers in a band.
When these people quit, the band is
basically over.
In my band, we are 3 and have decided
to give the musical direction to the guitar
player while me and the bass player can
suggest supportive ideas. Sometimes,
The guitar player will ask me to come up
with a drum beat for a specific section and
he even requested a "drum song form"
in which the Grooves was the main
idea to start upon.
In the long run the album sounds more
like a single and define band than
one who sounds like there's more than
one band on the same cd because too
many musicians try to force their ideas
or style.
And as long as it sounds good, there's
really no need to change lead.
