wow. >> went on to become the biggest-selling collective music series in history. ♪ >> the new album, the best of the great american songbook. a follow-up to the hugely successful album before, which brought you back into huge vogue in america. is it extraordinary you've had this career resurgence on great american songs? >> it is. you know, for a british boy from north london to be sing songs of ella fitzgerald and louis armstrong, quite remarkable. >> people telling you don't do this. >> first i had the idea in the '80s. the record label said, we think you're a rock singer. you don't need to do anything else. when i went to j. records, my current label, they had nothing but enthusiasm. it was done as a labor of love. i said if it loves 50,000, it