I agree David his voice in this period was just wonderful- it’s no wonder he became a sensation at the time. There are so many favourites including the one you posted along with I Apologise, A faded summer love and his theme song which is just beautiful. 

It must have been astonishing for many folk to turn on their radios in 1931 and hear Bing's recordings. Aussies were less fortunate because Brunswick  (Australia) went out of business that year and and seventeen of the titles (including Now That You're Gone) which Bing recorded for Brunswick in 1931 were never released here as singles.

It should be also noted that in the 1931 (US), records were not permitted to be broadcast on commercial radio. Recording artists did all they could to promote recordings over live radio broadcasts, live personal appearances on radio or, if lucky enough, in film. There was also a lot less people purchasing records, as the great depression, hit the country & world very hard. Many found an investment in a radio, indeed a better, if any, investment for entertainment. While some other contemporaries of Bing did manage to hang on, there were NO other (1931) COMMERCIAL entertainers that even came close to Bing Crosby's combined SOLO success in recordings, radio & film. /I would also venture, without the depression, most of those great VICTOR & Brunswick masters would have been million sellers! I more so suspect & speculate that SOME of those original VICTOR & Brunswick master, counting the small original sales & linking them to re-issues, since (1931), did sell over a million.1931 recorded titles include "Wrap Your Troubles in Dreams". "Just One More Chance", Star Dust" & especially "Where The Blue Of The Night".