The form of libretto includes the introduction, a duet and three finals.

Despite the mistakes made with the album, it did very well on the charts and included a duet with Take 6.

The re-release is expected to include new songs, as well as duets.

Although the program included several duets, it avoided the ballet-competition look of war horse excerpts.

The vocal music is particularly difficult to sing and includes a virtuoso duet for hautes-contre.

His method books still in use today, and include duets, etudes, studies, finger exercises, scales, etc.

Productions include a duet in which two people crawl over each other as they prepare a zucchini dish and a movement game for five people.

It also included a duet with legendary 1960s rock/pop icon Lou Christie.

The album included solo singles, as well as duets.

A Familiar Promise, released in July 2008, also includes duets between both voices.