Ultimate Sinatra is a 2015 compilation album by American singer Frank Sinatra released specifically to commemorate the 100-year anniversary of his birth. The collection consists of songs recorded from 1939 to 1979 during his sessions for Columbia Records, Capitol Records, and Reprise Records. A single-disc version also was released, consisting of 24 tracks from the box set plus an exclusive alternate studio take of "Just In Time." The Australian 2-CD edition adds a complete, previously unreleased recording of Sinatra's December 1961 concert at Sydney Stadium. The American release truncates the Sydney show.