Wellington's Chamber Orchestra is about to celebrate its 50th birthday with a flourish. The amateur orchestra has launched many professional careers over five decades, and also has musicians who've been in its ranks for most of that time. Lynn Freeman caught up with conductor Rachel Hyde and cellist Gary Wilby, currently rehearsing for the big celebratory concert. The Wellington Chamber Orchestra plays its 50th anniversary concert on Saturday May 28 at the Alan Gibbs Centre at Wellington College. Among the highlights will be Gareth Farr's Terra Incognito and The Planets by Gustav Holst.