With brassy retro-R&B songwriting and a graveled voice, this prodigiously talented Scottish singer-songwriter is known for fiery live performances. Rae Morris supports.
We've got some good news. Whether you missed out on tickets or went along and wanna relive the night, you can watch this performance live or on-demand.
Check it out on iPhone, iPad or iPod touch, iTunes on your computer or in stunning HD with Apple TV. Visit www.itunes.com/festival for more information. Join the conversation using #itunesfestival.