Timbaland puts the children's songwriting and dancing to the test; Benji and Lacey Schwimmer visit; an artist commits a faux pas; a heated blow up leaves a lasting impression.

Timbaland pairs the children for group performances; Macy Grey and Howie D discuss collaboration; a group struggles to overcome their past.

Timbaland challenges the children to work together in a professional music video where a no-nonsense director pushes them to the limit; two artists vie for the same part and one struggles to break out of their shell.