sentences:  The Andrew W. Mellon Artist Diploma Program for Theatre Directors was a two-year graduate fellowship that began in 1995 (expanded to three years in 1997) and was discontinued from autumn 2006.The music division offers a four-year Bachelor of Music (BM) degree, a Master of Music (MM) degree, a Doctor of Musical Arts (DMA) degree, an Artist Diploma (AD), or a diploma.In prior years it also awarded B.S.