Yes, Lilith Fair has blossomed. Don't be put off by the name of this local celebration of women's movement - it's mostly mellow folk. One of the great U.S. songwriter festivals. Festival Finder Searchable database for festivals worldwide. One of the most creatively run festivals anywhere.
Artists typically hang with the crowd.
End of August. Songwriters in many genres. Annual festival organized by the excellent Inter-mountain Acoustic Music Assoc. Includes a prestigious songwriter contest. Starts Memorial Day - 3 weeks.