Alison Krauss has done much to popularise bluegrass in recent years. Her early recordings were pure bluegrass - this (from 1990) might just be the best album of that phase of her career, although they are all brilliant and it's hard to choose a particular favorite. Her more recent albums have included other influences but I enjoy those too, in a different way.
There are no really famous songs on this album, but the quality of all the songs is high. Sidney Cox (of the Cox family, a noted bluegrass group with which Alison recorded a gospel album) wrote four songs including the title track (a bright, upbeat song) and Tonight I'll be lonely too (an outstanding ballad). Other favorites of mine include Steel rails (a brilliant train song), Endless highway, Will you be leaving and One good reason, but there are so many great songs here and it may be that your favorite is one I haven't mentioned. The overall feel of the album is bright and upbeat.
If you are unfamiliar with Alison's early music, I recommend that you buy Now that I've found you - A collection, which I've already reviewed. That includes one track from each of her early albums, plus tracks not available on any of her other albums so far. If you have that collection and you are looking for more of Alison's early music, you will enjoy this.