Cool birthday song that Tony himself as swings itself, also the colleagues and friends with whom he does it all have class, there is nothing! However, you realize most of these duet partner thoroughly that they are usually in a different genre of music at home - not bad, but also not world class. But for true fans a nice treat! My absolute Toptip is the duet with Barbra Streisand, with the course really could not go wrong, they did it halt (like Tony) full it!