Listen to Rain Sounds - Concentrate online. Rain Sounds - Concentrate is an English language song and is sung by Rain Sounds, Nature Sounds and Deep Sleep. Rain Sounds - Concentrate, from the album 20 Natural Rain Sounds: Get to Sleep, Learn to Meditate, Find Inner Peace, Study Aid, Relax, was released in the year 2017. The duration of the song is 2:46. Download English songs online from JioSaavn.