Rebecca Black thanked by Justin Bieber singing "Friday" and says it is a Belieber

As posted here, Justin Bieber singing a song from Rebecca Black,"Friday" at his concert in Nottingham, last Thursday (24).
The attitude of the singer could not have been better for Rebecca,who both asked for a duet with Justin and had a good sign to dream of this possibility is real.
Rebecca Black thanked Justin Bieber on Twitter: "Ohohoho. Thankyou for Justin Bieber singing a small part of" Friday "in concert. Thatwas epic."