Listen to Personal Development online. Personal Development is an Unknown language song and is sung by Black Butterfly Music Ensemble. Personal Development, from the album Yoga TOP 100 – Meditation and Relaxation Music for Yoga Class, Relax Your Mind, Guided Mindfulness Meditation, Relaxing Tracks, Namaste, was released in the year 2015. The duration of the song is 3:38. Download Unknown songs online from JioSaavn.