In a mellow tone (D. Ellington)

Whose song is In a mellow tone (D. Ellington)?

Artist Album
Erroll Garner Trio
Humoresque - 1953-1956
Vol. 226 - Humoresque - 1953-1956
Trio et Quintette au Montreux Jazz Festival 2000
Lera Gehner Band
My yesterday was blue, dear