For detailed choral writing or on occasions when you want the gorgeous sound of ribbon mics, the Eternity Expanded Library is for you! Eternity Expanded is a paid choir add-on library to the main library (Eternity Adult Choir). Eternity Expanded can only be purchased as a bundle with Eternity Adult Choir, or separately if you already own Eternity Adult Choir. In other words, you must own or purchase Eternity Adult Choir to use the Expanded version.