Bill Monroe's Gibson F-5 mandolin is now part of the Country Music Hall of Fame and Museum's collection.
The instrument that the Father of Bluegrass played for most of his career was acquired by the hall through the help of Murfreesboro philanthropist Bob McClean.
It was donated during a ceremony in Nashville on what would have been Monroe's 94th birthday.
Hall of Fame director Kyle Young calls it the most famous mandolin ever played and described it as Monroe's "partner" for more than 50 years.
Monroe bought the instrument in a Florida barbershop for 150 dollars around 1945.
He last played it on the Grand Ole Opry the year he died -- 1996.
James Monroe was there and said his father always hoped his mandolin would eventually go to the Hall of Fame.
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