New York-based C4 Ensemble is a choir that specializes in new music. Most of its members are composers or conductors, or both!

On Thursday March 1 and Saturday March 3, the group is performing a program entitled “A Loss for Words: An Evening of New Choral Music on Alternative Texts” (info and tickets here). Since I’m away this weekend at a conference in Dayton, C4 was kind enough to let me sit in on one of their recent rehearsals.

The group’s dynamic is a lesson in exceeding expectations. The member’s take turns leading warmups and rehearsing pieces, allowing for several conductors to direct works on each concert. I was impressed that, despite the occasional oneupmanship that’s inevitable to find when having that many conductors in a room, they do quite a good job of sharing and passing authority from one person to the next. Indeed I’m so glad that C4 is around: They seem to revel in the challenges that other choirs avoid like the plague. One person to a part in polytonal divisi? No problem. Finding your pitch out of nowhere after clouds of clusters? Sure! Singing in three different meters at once? What else you got?

For music without conventional texts, these pieces have a lot to say. The program features guest soloist Toby Twining, performing with the choir in a beautiful piece of his from the late 80s, “Hee oo oom ha,” a multicultural essay featuring Twining’s flexible countertenor scatting, African polyrhythms, and sepulchral shamanic incantations from bass Hayes Biggs. A new piece by Tim Brown juxtaposes spoken word clips from adverts and news headlines that overwhelm a chorus resembling a Sondheim waltz, seeking desperately to blot out the chatter.

“The Blue of Distance,” by Zibuokle Martinaityle, is a beautiful and intricately woven score with many divisi humming lush polychords, set against keening ostinatos. I was quite taken with Martha Sullivan’swork on the program, which features earthy melismas and folk music references.In addition, C4 will be singing John Cage, Huang Ro, Thomas Stumpf, Jaako Mantyjarvi, David Harris, and Karen Siegel. If you’re in town, this promises to be an exciting and varied concert program.

Thursday, March 1, 2012 @ 8pm Church of St Luke in the Fields 487 Hudson Street (south of Christopher St.)
Saturday, March 3, 2012 @ 8pm Tenri Cultural Institute 43A West 13th Street (bet. 5th & 6th Aves)