Where and when

Pyramid stage, 12.30pm

Dress code

Glastonbury 2011 T-shirt (men); floral headbands and cheek-revealing denim cut-offs (women)

What happened

Though they looked a little nervous, particularly singer Danielle, these LA sisters tore up the main stage with a riff-heavy set of pop-rock hits-to-be, and filled the space with an excellent display of stadium-like showmanship. "This is the best moment of my life," beamed bassist Este.

Who's watching

Everyone, it seems – it's a huge crowd for such an early slot. And Florence Welch.

High point

Other than a proper singalong for Falling – the first I've heard at this year's festival – it was amusing to watch the audience slowly fall for Este's "bass face". Soon they were cheering every time she appeared on the large screens.

Low point

Around two thirds of the way through, Este had a turn and had to sit down for Go Slow. "Sorry, you guys, sometimes diabetes gets the better of you," she explained. ("Have a Snickers!" the girl behind me shouted, unhelpfully.) When she stood up for the next song, the crowd roared.

In a tweet

Ace bass face.