... that in a memorial tribute to Tachikawa Sumito, a former colleague said she did "not think there will ever be another [Japanese singer] to surpass him"? Source: 立川清登さんの思い出 [Memories of Mr. Tachikawa Sumito], p. 1
ALT1: ... that in 1976, Tachikawa Sumito made a hit cover of a song he first discovered when a housewife called into his radio show requesting to hear a version of it? Source: 立川清登 [Tachikawa Sumito], p. 59;
[1]