You really need to check out the Jazz Mandolin Project. It was started by Jamie Masefield, a wonderful mandolin player, and explores all kinds of interesting musical territory, much of which is NOT typically associated with the mandolin. THe name suggests jazz obviously, but that is only the starting point. Over several albums, they seem to touch on about every genre imaginable. I am particularly found of their first album. It is mainly a trio album, with Masefield, Stacy Starkweather (he plays a phenomenal fretless bass, with a wonderful round tone), and Gabe Jarrett (yes, Keith Jarrett's son). The albums are extremely well recorded as well. I use the first disc frequently when testing out new equipment, because of the dynamics and the nuances of the instruments.
For more info, check out there website at http://www.jazzmandolinproject.com/
Happy listening. . .