Sizemore joined the Dixie Gentlemen in 1957 and played in that group for the next eight years. Then he was under the dynamic power of bluegrass bandleader Jimmy Martin until 1968. The following year he helped form a new group in which he would really polish his playing abilities, the Shenandoah Cut-Ups. It was "cut-up" as in a musical cutting contest, not some kind of musical comedy sketch. In this band Sizemore was matching solos with fiddler Tater Tate and flatpicker Wesley Golding, no slouches at all. He began to really dig in, and the impression was that he would find a new note higher up the register than the one before each time he played a solo. Indeed, his playing in the upper realms of his fretboard sometimes brings forth comparisons to church bells ringing. This, combined with the old-time country dance listeners many fans claimed to hear lurking beneath the syncopation of any given part of a solo, meant that Sizemore was covering just about all the bases in the Appalachian musical game. He played in Country Grass from 1974-1976 and from 1978-1979 was a member of the Del McCroury band the Dixie Pals, recording some of his most heartfelt solos from his first period. Following a brief stint with the Boys from Shiloh in 1986, there was a gap in Sizemore's musical activity. He simply dropped out of the picture.
But he returned five years later with the Bluegrass Cardinals, and it turned out to be more than just a new beginning for him. A wonderful sense of maturity began to ring through even stronger in his playing, and this was combined with the sincere gratitude with which the bluegrass audience welcomed his return to the scene, and the subsequent strong recordings as a leader. Furthermore, Sizemore used his solo recording efforts to put forth his work as a composer, beginning with the eight new tunes he showcased on the 1993 Back in Business album for the Hog Holler label. Fellow pickers picked right up on Sizemore's talent as a composer and several of his tunes were recorded by others. His most famous composition was the instrumental "Rebecca," which was even covered by the Czech/American bluegrass band Spruce Pine. "Lee's Reel was recorded by fellow mandolinists Alan Bibey and John McGann. Back in Business was chosen as the International Bluegrass Music Association's instrumental album of the year, while the AuvTab company published a book of Sizemore's transcriptions of tunes and mandolin solos. He frequently conducted workshops for mandolin players in the context of festival appearances. Herschel Sizemore died on September 9, 2022 at his home in Roanoke, Virginia at the age of 87. ~ Eugene Chadbourne, Rovi