The word “meditative” is as groan-inducingly overused as a descriptor for ambient music as a word can be, yet there’s really no better way to understand the work of M. Geddes Gengras. Amidst a sea of modular synth noodlers more content to show off their equipment than to make something meaningful of it, Gengras’ deep focus on carving out spacious, lived-in sonic worlds with his instrument, and his ability to transport his listeners to those mysterious places, has never wavered. His latest album Guest List represents a major departure from the solitary world-building of his previous work, bringing in a bevy of collaborators who leave no stone unturned in exploring every last corner of his sound. The result is an uncharacteristically cluttered soundscape…