We as a whole know Aerosmith’s Steven Tyler is one cool dude, yet he just showed signs of improvement.

Steven Tyler (born in March 26, 1948) is an American singer-songwriter, multi-instrumentalist, and former television music competition judge, best known as the lead singer of the Aerosmith, in which he also plays the harmonica, and occasional piano and percussion. He is known as the “Demon of Screamin”due to his high screams and his wide vocal range.

While in Moscow on a tour with Aerosmith for Moscow’s 868th birthday celebration, Steven Tyler halted in the street to sing with a performer. Tyler walked around to the guy and sang “I Don’t Wanna Miss a Thing.” It’s impromptu to the point that Tyler’s even somewhat off since he’s never performed with this person!

It’s a performer’s dream come true and I’m certain this person is still freaking out!!

Watch the video below and enjoy: