Listen to Invocation (An Introduction to Thevaram) [feat. Sadhguru] online. Invocation (An Introduction to Thevaram) [feat. Sadhguru] is an English language song and is sung by Sounds of Isha. Invocation (An Introduction to Thevaram) [feat. Sadhguru], from the album Isha Thevaram: Outpourings of Tamil Devotion, was released in the year 2020. The duration of the song is 3:58. Download English songs online from JioSaavn.