Proof of the suspicions appeared later: in 2012, a Library of Congress archivist revealed that material donated by Wayne's wife the previous year included an unreleased recording of the guitarist playing the tune at a jam session in 1946. Then, it was known by the title "Sonny", after trumpeter Sonny Berman, who also played at the session.
Later evidence emerged: in 2012, a Library of Congress archivist revealed that material donated by Wayne's wife the previous year included an unreleased recording of the guitarist playing the tune at a jam session in 1946. The recording was later identified as "Sonny", after trumpeter Sonny Berman, who also played at the session.