Have a gig coming up, just finished the rehearsal. For various reasons too detailed to go into, I will be playing behind the drummer, and next to the piano. So the piano is to my left, the drummer is in front of me. I'm relying on my amp, there is no house sound system available to me. Theater seats about 350 people or so. I've got a 400-watt amp and speaker cab. I'm plenty loud enough for the pianist to hear me, and the drummer can hear me. Not sure the audience will be to. Any tips on this? I don't know that there's much that can be done (besides turning up as loud as the pianist and I can stand it). Thanks in advance for any insight.