Members of The iPad Orchestra recently performed 'Sweet Dream' by Ilya Plavunov on four iPads. The video below has been highlighted by Apple, and numerous Mac focused sites.

The orchestra used the Seline HD app by devloper Amidio, which features a new, ergonomically designed playing surface called ioGrid.

According to the makers, Seline can be used to play any melody but it does have its own character and sound. The player can choose from 20 built-in factory voices - flutes, bowed strings, reeds, synth leads and more -  and nine drone voices. Drones - chorded synth pads -  are generated on-the-fly based on the complex analysis of your melody line.

Available from the Apple iTunes App Store, Seline HD costs £5.49 and requires the iPhone 3.2 Software Update or later. You can see more of the orchestra at http://ipad-orchestra.com. The YouTube video can be seen here.

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