Tony Bennett released four duet studio albums (with multiple artists per album) between 2001 and 2012. This project pairs the alphabet with 26 songs from his gentleman collaborative discography. Some notable names here are Sting, Elton John, Billy Joel, Michael Bubl?, Ray Charles, John Legend, George Michael, Paul McCartney and Stevie Wonder to name a few. There is even a duet with the legend Frank Sinatra, with Bennett featured as a guest on Sinatra's own duets album released in 1993.