Did frank zappa ever win a GRAMMY?

Frank Zappa won four GRAMMY Awards during his lifetime. His first win was in 1988 for Best Rock Instrumental Performance for the song "Jazz from Hell." He won again in 1991 for Best Rock Instrumental Performance for the song "The Black Page, Pts. 1-4." In 1994, he won the GRAMMY for Best Instrumental Composition for the song "Sofa." His final GRAMMY win was in 1997 for Best Rock Instrumental Performance for the song "Peaches en Regalia."