When it comes to describing tUnE-yArDs, words often fail. The brainchild of songwriter/musician Merrill Garbus, the band offers a seamless blend of indie pop, electronica and worldbeat that sounds like no one else. BiRd-BrAiNs, Garbus’ first project as tUnE-yArDs, was produced on a handheld voice recorder and originally self-released digitally and on cassette in 2009. BiRd-BrAiNs caught the ear of renowned indie label 4AD, who released the record on CD and extensive touring followed. But it was Garbus’ second LP w h o k i l l that really put tUnE-yArDs on the map. Recorded in a studio with members of Garbus’ road band and released in April 2011, w h o k i l l covers a dizzying array of ground and includes standouts tracks “Bizness” and “Gangsta,” the latter of which appears on episodes of The Good Wife and Weeds. w h o k i l l earned tUnE-yArDs accolades around the world, topping the Village Voice’s annual Pazz & Jop music poll. Now Garbus brings her distinctive vision to the Austin City Limits stage at The Moody Theater for a performance on May 29.