The gorgeous Peter Andre will be performing GHOST the Musical’s spectacular number ‘Unchained Melody’ at the Piccadilly Theatre (14 September). The loveable Stacey Solomon will appear in the encore for WICKED at Apollo Victoria Theatre to sing ‘For Good’ (10 September). The multi-chart-topping Sugababes will take on ABBA’s smash hit ‘Dancing Queen’ in MAMMA MIA! at The Prince of Wales Theatre (15 September). And finally, the legendary Melanie C will sing the highly charged ‘We Are The Champions’ and ‘We Will Rock You’ in the Queen musical We Will Rock You at the Dominion Theatre (13 September).