Die Singphoniker is an internationally renowned German vocal ensemble whose repertory ranges from Gregorian chant and Renaissance-era music to modern and avant-garde works, and also includes folk and popular songs. The group consists of six male singers, one of whom doubles as the ensemble's pianist. A typical Die Singphoniker concert program might include a selection of chant and German folk songs, along with a colorful mixture of works by some or all of the following: Lassus, Haydn, Schumann, Brahms, Richard Strauss, Cole Porter, Gershwin, and Simon & Garfunkel. Die Singphon...