However a few youngsters - obviously up way past their bedtime - were content to sit back, hopefully stay awake and avoid another earthquake.
Regardless, Osment, 18, and her four-piece group delivered a sweet and relatively short set of Disney-designed, radio-friendly power pop a la Miley Cyrus and that Jonas Brothers cartel.
"Thank you so much," she said before encouraging fans to play instruments and become "the future of music."
Although she took to the stage a bit later than scheduled, fans might have been lucky to see Osment at all after telling the audience her tour bus broke down prior to arriving. There was no word on whether Osment felt the earthquake or the upcoming G20 Summit was responsible.
From there the performer moved through material focused on power pop such as the roots-tinged Average Girl and Fight Or Flight, the latter perhaps reminding fans of oldies acts like No Doubt. One highlight however was All The Way Up, a dance-based ditty that had Osment donning glasses whose rims lit up.
Perhaps the highlight -- despite more crowd-pleasers that came such as Let's Be Friends -- was What About Me which had fans singing and clapping along to.
