Rare Frequencies: Mudboy at Middle East; the Beeline Festival wraps up

It's week two of an influx of Providence's most spellbinding performers gracing our ears with a show of tricked-out organs and infinite drones. MUDBOY (a/k/a Raphael Lyon) is a veteran of the legendary Fort Thunder noise-art scene. Known for his theatrical performances, Lyon combines found sounds and modified keyboards to create what's sometimes called "fantasy noise." Make of that what you will. In terms of stage show (or lack thereof), guitarist AREA C is relatively strait-laced and straightforward, but the music -- dense, beautiful drones -- is equally transporting.

MUDBOY + AREA C + SKELETONS OUT + WORK/DEATH | Middle East upstairs, 472 Mass Ave, Cambridge | April 21 @ 8:30 pm | 18+ | $8 | www.mideastclub.com or 617.864.EAST

The BEELINE FESTIVAL winds up this weekend with a pair of shows at the Broad Institute at MIT. Friday night's concert features the DIY electronics of ENSEMBLE ROBOT and LOUD OBJECTS who will perform works by festival organizer Evan Ziporyn, electronic-music pioneer Paul Lansky, and others. Oh and, yes, live bees will be involved. Sunday's concert features a different sort of metal machine music, as Boston's own Balinese gamelan ensemble, GAMELAN GALAK TIKA, led by Ziporyn, plays music by Balinese composer dewa ketut alit. Ziporyn says Alit's work "feels like a microtonal Steve Reich crossed with a Bulgarian Conlon Nancarrow." The rest of the program will feature very early gamelan music. There will also be a free gamelan workshop prior to the concert; email info@galaktika.org to reserve a spot.

ENSEMBLE ROBOT + LOUD OBJECTS | Broad Institute, 7 Cambridge Center, Cambridge | April 17 @ 8 pm | $15 | www.beelinefestival.com

GAMELAN GALAK TIKA + DEWA KETUT ALIT | Broad Institute, 7 Cambridge Center, Cambridge | April 19 @ 3 pm | $15 | www.beelinefestival.com