Listen to Rain Sounds - Concentrate online. Rain Sounds - Concentrate is an English language song and is sung by Meditation Relaxation Club, Deep Sleep Music Collective and Rain Recorders. Rain Sounds - Concentrate, from the album 13 Complete Sleep Relaxation Tracks - Meditative Rain and Nature Sounds, was released in the year 2018. The duration of the song is 2:46. Download English songs online from JioSaavn.