Listen to Rain Sounds - Concentrate online. Rain Sounds - Concentrate is an English language song and is sung by Meditation Rain Sounds, Rain Sounds and Deep Sleep. Rain Sounds - Concentrate, from the album 2017 Rain Sleep Sounds: Drift Off, Sleep 8 Hours, Cure Insomnia, Peaceful Sleep, was released in the year 2017. The duration of the song is 2:46. Download English songs online from JioSaavn.