You can't really tell what the audience wants but you can tell what will keep everybody's attention in the same place.
Leo KottkeThe principle element in a performance is risk, and if you're losing interest then by scaring yourself to death the audience will feel it and boy it'll wake them up.
Leo KottkeIt is not a mystical thing, however, it is obvious and practical and I think that what the performer does is to try to get to that point with every choice you make from the phrasing in a tune to the choice of tunes.
Leo KottkeWhen the audience is awful you can still have a great night and people will walk out thinking they had a great time even though there was loads of loudmouths and the sound was terrible.
Leo Kottke