I concur. THAT'S the primary reason (whenever possible) I think it well worth adding 1 or 2 other pro level instrumental musician(s)/singer(s) on my concert gigs. Not only is onstage musical interaction between band members (from duo to 3 piece) MORE musically rewarding personally, but the audience appreciates the musical chemistry that transpires as well, and reflected by their enthusiam & greater repeat concert bookings for this time of band arrangement. In Europe, for whatever reason, one-man band entertainment appears to more accepted form of social pub entertainment, but in the USA, I believe American's have grown to expect a live band (even if it's just a duo) when they're spending their hard earned dollars to pay for, and go out for an evening of LIVE music entertainment.

- Scott