Cost: $11.50 in advance, $15 at the gate (kids under 12 free with adult); $20 for a two-day pass in advance, $25 at the gate

Organizer: West Town Chicago Chamber of Commerce

What to expect: An environmentally focused event in Eckhart Park, where all the vendors are earth-friendly (recylced crafts and solar-powered devices will be on offer) and the music is earth-shaking.

Why to go: Sure, the fest will help fun improvements to the Eckhart Park playground - but the real reason to check it out is Saturday headliner Art Brut (Tapes 'n' Tapes also plays). These English art-punkers are awesome live. Lucero closes things out on Sunday.

The full music lineup:

Saturday
2:30 p.m.: Brilliant Pebbles
3:20 p.m.: Elsinore
4:25 p.m.: Sybris
5:30 p.m.: Maritime
6:35 p.m.: Say Hi (...)
7:40 p.m.: Tapes 'n' Tapes
9 p.m.: Art Brut

Sunday
2:30 p.m.: Canasta
3:20 p.m.: Minneapolis Henrys
4:25 p.m.: The Saps
5:30 p.m.: Catfish Haven
6:35 p.m.: These United States
7:40 p.m.: Murder By Death
9 p.m.: Lucero