Listen to Muffin Man (Instrumental Version) online. Muffin Man (Instrumental Version) is an English language song and is sung by The O'Neill Brothers Group, Bedtime Lullabies and Lullabies for Deep Meditation. Muffin Man (Instrumental Version), from the album Relaxing Piano Lullabies for Deep Sleep, was released in the year 2017. The duration of the song is 3:32. Download English songs online from JioSaavn.