Listen to Hollywood Hills Rain Retreat: Deep Sleep Sounds online. Hollywood Hills Rain Retreat: Deep Sleep Sounds is an Instrumental language song and is sung by HarmonicLab Warrior. Hollywood Hills Rain Retreat: Deep Sleep Sounds, from the album Dark Cloud Rain: Moody Ambience with Thunder, Rain, and Lightning for a Dramatic Experience, was released in the year 2024. The duration of the song is 2:04. Download Instrumental songs online from JioSaavn.