A harmonygasm is the experience that people (mainly those involved in musical theatre) experience when hearing a very intense harmony in a song. Harmonygasms can result from harmonies in all music, but usually they result from contemporary musical theatre songs that include belted harmonies. Harmonygasms usually give the harmonygasm-er chills, intense joy, shaky hands, and a rapid heart beat, as well as an intense love for the music giving the person the harmonygasm.
"Oh my god, listen to the I love you Song from 25th Annual Putnam County Spelling Bee. The whole song gives me a harmonygasm."
by mtbeast September 11, 2009