Gallery: 2013 L.A. Amp Show

“It’s like time travel,” says Brandon Seabrook, reflecting on the sonic whiplash of “Object of Unknown Function.” The piece, which opens the composer’s solo album of the same name, journeys jarringly from aggressive “early banjo stuff” up through “more 21st-century classical music,” combined with electronic found sounds from a TASCAM 4-track cassette recorder. The end result approaches the disorientation of musique concréte.

“The structure is kind of like hopping centuries or epochs,” he adds. “I [wanted] all these different worlds to collide. It’s like a choose-your-own-adventure.”