First recorded by João Gilberto (1958).
Hit versions by Ella Fitzgerald (US #102/UK #38 1962), Stan Getz & Charlie Byrd (US #15/MOR #4/UK #11 1962).
Also recorded by Lambert, Hendricks & Bavan (1963).
From the wiki: “‘Desafinado’ (a Portuguese word usually rendered into English as ‘out of tune’ or as ‘off-key’) is a bossa nova song composed by Antonio Carlos Jobim with lyrics (in Portuguese) by Newton Mendonça. English-language lyrics were later written, in 1963, by Jon Hendricks and ‘Jessie Cavanaugh’ (a pseudonym used by The Richmond Organisation). Another English lyric, more closely based on the original Portuguese lyric (but not an exact translation) would later be written by Gene Lees.
“The 1962 recording by Stan Getz and Charlie Byrd (from the album Jazz Samba) would become the definitive version, becoming a major Pop hit in 1962 in both the US and the UK. The song was voted by the Brazilian edition of Rolling Stone magazine as the 14th greatest Brazilian song. ‘Desafinado’ was also inducted into the Latin Grammy Hall of Fame in 2001.”