Over nearly two decades, composer / multi-instrumentalist M. Geddes Gengras has released an enormous catalog of wide-ranging, synth-focused music in solo and collaborative settings. He has participated in influential experimental groups like Sun Araw, Pocahaunted, Robedoor, and Akron/Family. Along with Sun Araw's Cameron Stallones and a host of Jamaican singers and artists, Gengras blurs the boundaries of dub and electronic music under the banner of Duppy Gun Productions. His solo works have appeared on labels including Room40, Leaving Records, Holy Mountain, and Umor Rex. After many years living in Los Angeles, Gengras now calls upstate New York home.M. Geddes Gengras returns to Hausu Mountain with Guest List, his fourth entry in the label's catalog since 2019 and the first to be issued on vinyl. His albums for HausMo have ranged from the topographical ambient synth networks of I Am The Last of That Green and Warm-Hued World (HAUSMO88, 2019), to the dense technoid beat experiments of Time Makes Nothing Happen (HAUSMO109, 2020), to the lush post-rock-adjacent harmonic architectures of Expressed, I Noticed Silence (HAUSMO127, 2022). On Guest List, Gengras composes the most ambitious song cycle that he has ever captured in the context of one album, weaving his own synths and electronics into a dense tapestry of contrasting genres and ideas all animated by the presence of an enormous cast of collaborators. In Gengras's hands, the infinite-limbed drum performances of Greg Fox, the ecstatic guitar explorations of Ben Chasny (Six Organs of Admittance), the soaring vocalizations of Christina Carter (Charalambides), and the contributions of many more artists become individual brushstrokes to paint across the canvases of his dense mixes. Channeling sonic details from his wide circle of friends, Gengras broadens his range of expression and composes the most communal and ultimately personal program of music in his bottomless catalog.