ask yourself this-
is a soccer captain really necessary? it's quite the same for a band.
at the end of the day, it's a team effort and everybody needs to work together.
But a good, firm hand of a leader gets rid of indecisiveness and sloppiness, and keeps things running smooth.
You will get more things done, get them done better and move along quicker.
A leader will take charge automatically. There will be no need to voice out his position, nor will there be any opposition to his silent domination.
its not necessary to have a leader.
but there is for sure a guy who always arranges the jamming session, books the studio and smses everyone about it and makes sure everyone is there on time by constantly smsing everyone and stuff