Bill Monroe spoke of bringing 'ancient tones' into his music with echoes of British and Irish fiddle and bagpipe music, while also delving deeply into American blues, gospel, folk hymnody, and hill country dance music. To that gumbo, he added the invigorating rhythms and harmonies of hot jazz. It was a new kind of American music, named in honor of his band The Blue Grass Boys to be known, simply, as