who sings im only happy when it rains
Shirley Manson
Only Happy When It Rains
The mix was noted for Manson's voice being at the same volume as the instruments; in mainstream pop, the lead vocal is usually louder than the instruments. 
wiki:12841373
Only Happy When It Rains [SEP] Composition and recording
The mix was noted for Manson's voice being at the same volume as the instruments; in mainstream pop, the lead vocal is usually louder than the instruments. The song is in the key of G# minor, the time signature of 4/4, and at a tempo of 120 beats per minute. Its chord progressions are G#m–F#–E–C#m–E–F# in the verses and C#-F#-A-B in the chorus. Marker explained the song's bleak lyrics as a mockery of the angsty "wearing your heart on your sleeve thing" prevalent in mid-1990s alternative rock songs, as well as a self-deprecating reference to Garbage's own dark lyrics. Manson explained that the song was "a dig at ourselves because we like records that don't make us feel very happy, and at this so-called 'alternative' scene of 'we're so weird and more wonderful than everybody else'".