The nights usually begin with a film screening of a related music offering, before a selection of Indian bands take to the stage.

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Perhaps it involves making early Champions League group stage matches a higher priority when it comes to squad rotation and selection.

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As fans waited for Bieber to arrive on stage at The O2 on Monday, the arena's house disc jockey played a selection of songs.

BBC: Justin Bieber apologises for O2 gig delay

The microcontroller-driven stage allows anyone to quickly create a piece of miniature theater using handcrafted puppets and an impressive selection of buttons, knobs and switches -- all lovingly handcrafted out of wood on this prototype.

ENGADGET: Insert Coin semifinalist: Make a Play is a high-tech puppet stage