Listen to Rainy Day Retreat for Relaxation: Thunderstorm Sounds for Calm and Serenity online. Rainy Day Retreat for Relaxation: Thunderstorm Sounds for Calm and Serenity is an Instrumental language song and is sung by Kolten Ryan. Rainy Day Retreat for Relaxation: Thunderstorm Sounds for Calm and Serenity, from the album Gentle Lightning - Gentle Thunderstorm Music for Slumber, was released in the year 2024. The duration of the song is 2:04. Download Instrumental songs online from JioSaavn.