This is among the most widely used teaching repertoire for singers in the U.S. Over 30 songs in each book with 2 accompaning CDs (which are enhanced, you can change the tempo or key if you use it on your computer!), including American and British art songs, folk song arrangements, sacred songs and a sampling of beginning songs in German, Italian, Spanish and French. There is a completely different song selection for each voice type. For Baritone/Bass voices!