I have an album by Benny Goodman called Small Groups: Class of '39 which opens with the most beautiful version I've ever heard of the song Softly, as in a Morning Sunrise.

It's performed by Goodman's trio from the 30's with Teddy Wilson and Gene Krupa, and I don't think I've ever heard a more beautiful clarinet. There's just something about this song:

https://www.youtube.com/watch?v=XSeFc3CP5Mk

The recording is clearly drawn from a radio broadcast though with some radio voice introducing the song. Does anyone know if there exists any other recordings of this song by Goodman, bootlegs or otherwise? Every now and then I hear it again and decide to look around, but I haven't been able to find anything.