Normally it would take a political appeal, or a tribute to some old time rock and roll legend, to get Dr Dre, The Edge, Sheryl Crow and Alicia Keys onto the same stage.
But when they all showed up at the Consumer Electronics Show in Las Vegas this week it was entirely for their own benefit.
They were there as stooges to Carly Fiorina, the chief executive of Hewlett-Packard, as she made her conference keynote address and spoke movingly of how her company is going to 'democratize technology and empower digital revolutionaries everywhere.'
In an impassioned address, punctuated with a video of the future of home entertainment and a short performance by the talented Ms Keys, Fiorina tried to position HP at the centre of what she claims is a revolution in the way that technology is being used in daily life.
She talked about the ways that photography has changed from a chemical and physical process to one that is, as she put it 'digital, mobile and virtual'.
She waxed lyrical about the joy of hearing a song in Starbucks and downloading it wirelessly 'for a buck'.
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