There is a known bug in the music system where sometimes you can't hear someone playing. The fix is to log out and back in. It might be exacerbated by your need to use satellite to play but I am not sure. Band members who are meaning to play a concert will usually wait until everyone has got to one area and tested an instrument before being invited into the band fellowship to play. My suggestion would be to test your sound with another player and if it's not heard it could be either one of you.
[URL="http://s1.zetaboards.com/LeavesOfLaurelin/index/"]Leaves Of Laurelin - Landroval and Laurelin[/URL]
[URL="http://s13.zetaboards.com/Andunie/index/"]Andúnië - Elven music society - Laurelin & Landroval[/URL]
Makalaurë, Cotumo, Laurefindë, Witred, and Tulus!