Assemblage 23 is an electronic act from the United States, currently based in Seattle. It was founded in 1988 by Tom Shear who writes the music and lyrics and does the recording himself. Live performances are supported by Paul Seegers on keyboards and Mike Jenney on drums.
Prior to starting Assemblage 23, Shear experimented with music under the name Man on a Stage, beginning in the early 1980s. Most of Shear's music at this point was instrumental, as he lacked the confidence to sing; the quality of the music itself was highly questionable by his own admission. Shear eventually began to add vocals to his music; at the same time, Shear was also playing bass in a live band called the Advocates.