Complex sentence: Each night a band member of Take That chose an unsigned band or musician to feature including Sophie Ellis-Bextor who performed at all UK shows, except the December 31st concert at The O2 in London.
Split into simpler sentences: Each night a band member of Take That chose an unsigned band or musician to feature. In addition, Sophie Ellis-Bextor performed at all UK shows, except the December 31st concert at The O2 in London.