Bing was a Superstar, before the term was coined. I listened to a BBC documentary about how Bing was the KING of Radio. He was a difficult man in personal life, but in professional circles, he excelled.
http://www.bbc.co.uk/programmes/b09jvgph . His Kraft Music Hall was the thing. Even in the thirties my mom was hooked, she told me she'd run home after school to catch his show. His singing, a bit dated for me, was the sound of the first half of the 20th century. Frank, OTH, was alternately cool beyond belief and a bore. Hard to accomplish, but he did it. But, MAN, did he swing. With Basie's band behind him, the Sands was the place. I've listed to that album hundreds of times, it never ceases to bring joy to the house.