John Mayer couldn’t say enough about the fun he had working with Alicia Keys on her upcoming album As I Am, which is out in November.

Mayer got all soppy in a recent blog on his website. “We wrote a song called ‘Lesson Learned’, and it was one of the best creative experiences I’ve ever had,” John wrote. “Oh, and her lead-off single ‘No One’ is the track of the year. That’s all there is to it. It’ll blow you away when you hear it. She’s evolved so much as an artist, it’s crazy! She’s made one beautiful and brave album. Okay, okay! That’s enough slobbering over Alicia!” he gushed.