The answer is Martina McBride, in the liner notes for her new album album Eleven, she writes ”
“Love and Thanks to Dave Stewart. Your open spirit, creativity, and recklessness inspired me in my approach to this album. And you make a damn good martini”
Dave also appears on Martina’s album credited with playing guitar on the track Teenage Daughters, although Dave doesn’t appear in the 2 official videos for the track. The album was recorded with many of the same artists that have appeared on The Blackbird Diaries and Joss Stone’s LP1.