I LOVE Nickel Creek! Their first eponymous album, "Nickel Creek" (from 2000) is one of my reference discs which I used to audition speakers. It is superbly recorded, imo, and was produced by the great Alison Krauss. Chris Thile, their child prodigy mandolinist, has gone on to collaborate with many other amazing musicians, including Yo-Yo Ma! I would love to see them play live, but as you describe mijostyn, anything but a really small intimate venue where a PA system isn't needed, won't reveal the acoustic nuances as the studio recordings do.
Here is a recent recording/video of a song from that first record: https://youtu.be/1c4OOYp-5ic
From Wikipedia:
Nickel Creek (formerly known as the Nickel Creek Band) is an American bluegrass band consisting of Chris Thile (mandolin), and siblings Sara Watkins (fiddle) and Sean Watkins (guitar). Formed in 1989 in Southern California, they released six albums between 1993 and 2006. The band broke out in 2000 with a platinum-selling self-titled album produced by Alison Krauss, earning a number of Grammy and CMA nominations.
Their fourth album “This Side” won a 2003 Grammy Award for Best Contemporary Folk Album. Following a fifth studio album and a compilation album, the band announced an indefinite hiatus at the conclusion of their 2007 Farewell (For Now) Tour.[1] Following numerous solo projects from the band members, Nickel Creek reformed in 2014 with announcement of a new album and subsequent tour.[2]