Stephin Merrit delivered lead vocals for The Magnetic Fields , from The House of Tomorrow EP onwards .
The band released their debut and best known single `` 100,000 Fireflies '' in 1991 , which was typical of the band 's earlier career characterized by synthesized instrumentation by Merritt with lead vocals provided by Susan Anway ( and then by Stephin Merrit himself from The House of Tomorrow EP onwards ) .
The Magnetic Fields