The Queen singer took to Twitter on Sunday, May 03 to reveal he was hoping to tour with the 39-year-old "Genie in a Bottle" hitmaker before the COVID-19 crisis forced all musicians off the road.
"There was a whole plan to tour w @xtina this summer around the US," Adam told a fan. "Big venues too! But unfortunately everything went into Lock Down before we were ready to announce."
"Y'all know I'm an OG (old school) Christina Aguilera fan (sic)."
The concerts were set to be Christina's first since her latest Las Vegas residency, "The Xperience", which ended in early March (20).