With high viewing audiences the BBC seem to have hit the red button with their all-singing Saturday night show All Together Now, presented by Rob Beckett.  Five heats on and with the 10 chosen finalists, this Saturday (March 3) sees the final with the top talented acts competing for a massive £50,000 prize.  Choir leader and Sing&Smile ‘Goldies’ charity founder Grenville Jones from Bath waves the West Country flag as one of ‘The 100’ judges from across the UK, who…