Adam Lambert Comes Clean About Christina Aguilera Tour Plan Hampered by Coronavirus Adam Lambert shared big news with fans over the weekend, he was planning to go on tour with Christina Aguilera prior to the Coronavirus lockdown. Producer Claude Kelly shared a snippet of a demo Lambert had recorded of Christina’s 2012 duet song with Blake Shelton, “Just A Fool” which was featured on her album, Lotus. “You know what’s funny? There was a whole plan to tour with [Christina] this summer around the US. Big venues too! But unfortunately, everything went into Lock Down before we were ready to announce,” Lambert wrote on social media.