The inclusion of producer and singer as guest mentors for Top 6 Week turned out to be a fortuitous introduction for McPhee, as she has worked on various music projects with both men after Idol.
McPhee appeared on the Jan 19, 2010, episode of , McPhee was shown volunteering at a Los Angeles food bank and meeting with children at a Boys and Girls Club and talking about the importance of helping to fight hunger in America.
On June 9, 2011, it was announced that McPhee had signed a record deal with a label under , in conjunction with Columbia teaming with NBC to distribute the music for Smash.
McPhee signed a two-year endorsement deal in 2006 with Sexy Hair Concepts to become their first celebrity spokesperson for their hair-care product line.