Opeth
David formed Opeth with some friends from Täby in 1990. Long-time friend Mikael Åkerfeldt was in a band called Eruption, but was considering a departure from this group. One day David invited him to play bass for Opeth and Åkerfeldt accepted the offer. When he came to the rehearsal, however, none of the other members of the band knew Mikael was coming and they did not want to kick out the bass player they already had. The ensuing argument played out with all the members of Opeth (aside from David) leaving. They renamed themselves Crowley and released a demo tape called "The Gate" in 1991.
David remained with Opeth until 1992, when he left citing creative differences. His duties as lead singer were taken up by Åkerfeldt.
Read more about this topic: David Isberg