According to an interview Elton did for that kids' radio station Radio 1, "Sad" is also, if not fundamentally, using the backing vocals to Sorry Seems To Be The Hardest Word. This album is completely, wholly, fantastic. If you're not living in the past (before the age of jazz, when everyone did and re-worked each other's songs) you will realise this isn't by any means trashy teenage pop music - dance music is quite different, and Elton is quintessentially 'pop'. Basically, it is modern: they have taken sometimes completely obscure and not-famous parts of Elton's back catalogue (sometimes even he didn't know what bit of what songs they'd used) and updated them to be modern, summery, feel-good dance tracks. And done it with class and sophistication. Even the title track is just one line in Mona Lisas and Mad Hatters. I haven't heard such good, original production since Basement Jaxx (though this is nothing like Basement Jaxx). I am so utterly impressed. There is only one reason Elton would personally allow someone to re-work his music - because they are good enough. No wonder he is so chuffed with this record. And so am I. The deluxe version on iTunes comes with two remixes of Sad, three remixes of Good Morning to the Night and the video for Sad.