Legendary Bluegrass Pioneer Bobby Osborne Dies at 91

Bobby Osborne, lead singer of The Osborne Brothers bluegrass band, died at the age of 91.
Osborne helped bring bluegrass music into mainstream popularity by incorporating electric instruments and pop stylings.
He was known for his innovative mandolin playing and three-part vocal harmonies with his brother Sonny.
Their hits "Rocky Top" and "Ruby, Are You Mad?" became bluegrass standards.
Osborne received many accolades over his decades-long career, including CMA Vocal Group of the Year in 1971.