Listen to Concentrate with Calming Rain: Enhance Your Focus Naturally online. Concentrate with Calming Rain: Enhance Your Focus Naturally is an Instrumental language song and is sung by Jefferson Hamilton. Concentrate with Calming Rain: Enhance Your Focus Naturally, from the album Rainy Refuge - Relaxing Music for Escape and Relaxation: ASMR Nature Rain, was released in the year 2024. The duration of the song is 2:04. Download Instrumental songs online from JioSaavn.