Listen to Rainy Day Productivity Boost: Background Noise for Efficient Work online. Rainy Day Productivity Boost: Background Noise for Efficient Work is an Instrumental language song and is sung by Celia Callahan. Rainy Day Productivity Boost: Background Noise for Efficient Work, from the album Relaxing Rhythm - Soothing Sounds for Sleep and Relaxation: ASMR Nature Rain, was released in the year 2024. The duration of the song is 2:07. Download Instrumental songs online from JioSaavn.