I was downright giddy to attend the first-ever Treasure Island Music Festival this weekend, and the two-day event far exceeded my expectations. Of course, there was killer music — with M.I.A. scaling the stage towers and Built to Spill inspiring one dude to headbang — but there was also a Ferris wheel, an arcade full of retro video games, and stunning views of the San Francisco skyline.

The fest was cleverly split into an electronic day — with artists like Thievery Corporation and DJ Shadow and Cut Chemist — followed by a rock day, featuring M. Ward, Clap Your Hands Say Yeah, Spoon, and Modest Mouse. Each day packed in a total of 14 bands on two different stages with no overlap, so it was easy to get your money's worth and see every artist. YumSugar and I were there taking tons of photos, and we both agreed that the fest was awesome. Tune in tomorrow for a roundup of my favorite shows, and for my initial thoughts and a gallery of the fest in pictures, read more

Considering this was the first year of the TI Fest, I was really impressed with how the organizers pulled everything off; aside from some sound-mixing issues, everything seemed to go very smoothly. More important, I had a blast. Some observations:

The eco-effort paid off. TI Fest set out to be as "green" as possible, with on-site recycling and composting, biodiesel buses to the island, and prizes for people who picked up litter. It was great to see indie-rockers digging through the trash for recyclables, and as a result, the grounds were amazingly clean.

Big trend: babes in headphones. I noticed tons of moms carrying babies outfitted with giant padded headphones to protect their precious ears.

Indie rockers make for less interesting people-watching. Splitting the festival into an electronica day and an indie-rock day definitely affected the crowd. Day one definitely had more of a Burning Man vibe, while Day Two's attendees were better dressed but less fun to watch. One exception: This pair of dudes, one in a "Cougar Bait" tshirt and the other who insisted on standing up and flexing throughout the show.

For the rest of my photos, check out the gallery below. And tune in tomorrow for more highlights!