That’s a short behind-the-scenes peek at the Westside Symphonette, as one of the West Seattle community orchestra’s newest co-conductors, Rob Duisberg, showed the musicians how he’d like them to handle a Beethoven piece that’s on the program for their holiday concert. We caught up with them at last week’s rehearsal, and now it’s almost concert time – this Tuesday night at West Seattle High School Theater – strings and junior orchestra at 6:30, senior orchestra at 7:30. In addition to classics by Beethoven, Bizet, Holst, Schubert and Ravel, there’ll also be a traditional holiday singalong, from “Rudolph the Red-Nosed Reindeer” to “Hallelujah Chorus.” – Admission is just $1 (though they’ll be thrilled to accept donations above and beyond that). (Yet more West Seattle holiday highlights – music, plays, bazaars, trees, etc. – here.)