Sonically, this was one hell of a hypnotic show. Noah Lennox (a.k.a. Panda Bear, also of Animal Collective) served up dense layers of guitar and vocals, while special guest Peter Kember (a.k.a. Sonic Boom) added processed synths and samples and manipulated sequences. The two mostly performed a track-by-track version of Tomboy, Panda Bear’s latest album, which was mixed by Kember. At this live concert, recorded at the Music Hall of Williamsburg in Brooklyn, N.Y., the two musicians never visibly acknowledged the audience — I think Lennox said “thank you and goodnight.” There was no encore.