They’re called “standards” - it’s a combination of 30s-early 60s music, with some Broadway songs worked in.
- Tony Bennett
- Sammy Davis, Jr.
- Harry Connick, Jr.
- Diana Krall
As as starter, go to the library and see if they have “Steve Tyrell - Standards”. He sounds like Dr. John…
Also, if you want to hear some for free, download Netscape/Spinner. This isn’t the MP3-copyright violation stuff, this is just radio-over-the-Internet. It has a wide variety of music, one of them being the category “Sinatra style”. A cheap way to get familiar with this style of music…
Boy, do I feel old…