What does at last mean?

At Last

“At Last” is a 1941 song written by Mack Gordon and Harry Warren for the musical film Orchestra Wives, starring George Montgomery and Ann Rutherford. It was performed in the film and on record by Glenn Miller and his orchestra, with vocals by Ray Eberle and Pat Friday. Unreleased recordings of the song, however, had been made in 1941 by Glenn Miller for possible inclusion in the film Sun Valley Serenade. An orchestral version of the song without lyrics first appeared in that movie in 1941. A new version was recorded by Glenn Miller and His Orchestra in Chicago on May 20, 1942, and released by RCA Victor Records as a 78 single, catalogue number 27934-B, backed with the A side ” Kalamazoo”. The song reached number 9 on the Billboard pop charts in 1942, staying on the charts for 9 weeks, and later became a standard. In 1960, it was covered by blues singer Etta James in an arrangement by Riley Hampton that improvised on Warren’s melody. James’ version was the title track in the same-named album At Last! and was inducted into the Grammy Hall of Fame in 1999.