At the Monterey Pop Festival (1967).
Don’t know who’s playing brass, but the core band is Paul Butterfield (vocals, harp), Elvin Bishop (guitar), Mike Bloomfield (guitar), Mark Naftalin (keyboard), Jerome Arnold (bass) and Sam Lay (drums). My only complaint is that the harp isn’t close enough to the mike.
And that the festival particpants don’t seem to be . . . quite in their right mind.
But let’s not speak disrespectfully of grandma and grandpa.