For the second spring edition of Outline, post-rock titans Explosions in the Sky headline. One of the key groups to define massive, crescendoing rock in the ’00s, EITS writes, in their own words, “cathartic mini symphonies.” They deliver a sense of scale and depth to the stage that few touring bands can match. Iceland’s múm plays a rare set. The beloved alt-pop group brings a rare intimacy and power to a sonic pallette often described as twee, writing songs with a delicate sincerity and sense of easy play that is truly captivating. Guatemalan composer and cellist Mabe Fratti fuses breezy prog decadence and fleet-footed jazzy flourishes with crushing, stoner rock power. Philadelphia’s They Are Gutting a Body of Water channels thick, noisy indie music with an immaculate sensibility. Dutch artist upsammy, best known as a DJ, performs live. Her music is resetlessly inventive, folding IDM, bass music, techno and folktronica into something singular. Finally, Mexico’s Diles Que No Me Maten imbues a heartfelt swagger and woozy grandeur into their sprawling indie.

On Sunday March 30th, the legendary German guitarist Michael Rother headlines Outline, playing music from the two groups he is most known for: Neu! and Harmonia. The former was his landmark venture into hypnotic, “motorik” music following a brief stint as one of the founding members of Kraftwerk. The latter was a revered collaboration with German experimental/ambient pioneers Cluster. Each of these projects reshaped rock into a bold new framework: hypnotic and mercurial, fusing the spaciousness of dub with a lean, pared-back palette that mirrored the minimalist compositions of Philip Glass and Steve Reich, the conceptual provocations of Fluxus and the taut rigor of proto-punk. Rother’s vast discography is a treasure trove of irreplaceable, flowing avant-rock that has influenced generations without ever having been replicated. The same could be said of Thurston Moore. The former Sonic Youth frontman joins, fresh off the release of his new album “Flow Critical Lucidity.” He’s leading an ensemble alongside Australia’s narcotic pop duo HTRK and Japanese experimental songwriter and highly respected film composer Eiko Ishibashi.

Italy’s C2C Festival unveils its debut US edition with an incredible lineup featuring Oneohtrix Point Never, Nala Sinephro, Two Shell, John Glacier and more.