Listen to One Indescribable Instant online. One Indescribable Instant is an English language song and is sung by Crazy Ex-Girlfriend Cast. One Indescribable Instant, from the album Crazy Ex-Girlfriend: Karaoke Album (Original Television Soundtrack) [Season 1], was released in the year 2018. The duration of the song is 3:43. Download English songs online from JioSaavn.