Listen to Symphony No. 21 in G Minor: I. Adagio online. Symphony No. 21 in G Minor: I. Adagio is an Instrumental language song and is sung by Yevgeny Mravinsky and Leningrad Philharmonic Symphony Orchestra. Symphony No. 21 in G Minor: I. Adagio, from the album Glazunov: Symphony No. 4 - Ovsianiko-Kulikovsky: Symphony No. 21, was released in the year 2005. The duration of the song is 8:55. Download Instrumental songs online from JioSaavn.