Alumnus Ryan Brown will have a new work, “Mortal Lessons,” premiered at Princeton on March 12. The work is written for the a cappella octet Roomful of Teeth. Ignition Duo premieres Ryan’s “Double Negative” for two re-tuned electric guitars at the sixth annual Switchboard Music Festival on Sunday, March 24th. Ryan is the founder and director of this festival. In April, Ryan’s piece “Big Dig” will be performed at Lincoln Center at at the MATA Interval Series at Galapagos. “Still, It Moves,” written for the Crash Ensemble, will be premiered at Princeton on May 21.