High performance groups first of all are based on mutual respect. If you don't get that right, it isn't high performance and the clock is ticking.
Leadership can take many forms. My first rule is that whoever books the gig is the BL for the gig. Period. Why? Because that person is accountable for the product that gets delivered.
Musical leadership is a bit complicated; but, can have components consisting of talent, experience, knowledge, charisma, and communication skills. Bands can have multiple leaders depending on various roles.
Another aspect of high performance groups is that they are enablers, whereby each member tries to support and encourage high performance in the other members.
Let's take song or playlist selection, a common source of conflict in bands. First the band requires clarity as to what kind of band it is. Original compositions, cover material etc. Also, venues and audiences need to be identified. Playfare should serve the objective. Basement band is fine; then you can play whatever you want to play. Bar band requires playing what the bar owner and patrons want to hear. Event band requires playing suitable for the event. Original band requires writing great music.
IMO democracy in playfare selection is desireable, because it instills ownership. But, that requires the band share and agree on the needs of the gig, and put that purpose above each individual preference. And, in fact, once you start doing that, it can be fun.
And, a band can dabble in some of all of the above; but like anything else, it is important to prioritize and understand and share a central focus.
Many bands are flat out run by one band leader. Which is fine . It is simple. If you like the gig, stay on it. If not, let someone else have it.
