Emma Willis hosts the latest round of the blind auditions in the spinning-chair singing contest, in which celebrity `coaches" seek out the nation's best vocal talent. But there is a simple twist - with the four coaches selecting their teams through `blind auditions", looks play no part in the selection process, meaning each singer is chosen on vocal ability alone. Meghan Trainor is the newest recruit to the judging panel, joining series regulars Olly Murs, Tom Jones and Will.i.am.