A "phonecert" is where you are calling another individual and they are singing and/or playing an instrument with a variation of songs giving that "concert" feel. However it is via call/video call therefore giving its name "phonecert"

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)