The music started with overture.

音乐以序曲开始。

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At one point in 2001 Google officials even met with Overture to compare notes, Overture officials say.

FORBES: All Eyes on Google

Humperdinck's opera is in three acts, and begins with a popular overture introducing many of the score's main themes.

NPR: A Proms Fairy Tale: Humperdinck's 'Hansel and Gretel'

If so, Facebook could be held over a barrel before any IPO in the way that Overture did with Google.

FORBES: The Owner of Yahoo!'s Patents Could Cripple Facebook's IPO Aspirations