As Swingreen says, for classical use the Saint-Saens 3rd Symphony. But not any recording. The RCA Living Series recording with Munch/Boston Symphony includes very clean and smooth bass, right down to the 16HZ bass notes. Some organ records may also help, although many don't go that low.
Electronic bass varies all over the place. There is no "accurate" sound, since this varies with how it is recorded/integrated. For acoustic bass, a Telarc SACD recording called "SuperBass" features three well known and highly accomplished bassists playing jazz in an unusual arrangement and can serve well to demonstrate lower acoustic bass.
Electronic bass varies all over the place. There is no "accurate" sound, since this varies with how it is recorded/integrated. For acoustic bass, a Telarc SACD recording called "SuperBass" features three well known and highly accomplished bassists playing jazz in an unusual arrangement and can serve well to demonstrate lower acoustic bass.