Question: Franklin Delano Roosevelt Wakefield, is an innovative American player, of which instrument, in the bluegrass music style, Wakefield is known for his collaborations with a number of important and well-known bands, including The Stanley Brothers?
Sentence (from "The Stanley Brothers"): Ralph kept the band name when he continued as a solo after Carter's death, from 1967 until his own death in 2016.
Relevant evidence: No