It worked for Kansas, the band. As related by the band, when they were starting out they were to open for Aerosmith once. Steven Tyler had gotten a reputation for pulling the power cables to the amps if the opening band was doing too well, it might make Aerosmith look bad when they came on afterward. Kansas' stage manager had been informed of Tyler's antics, so he rigged up the amps to take power from the other side of the stage using hidden cables and put in fake cables to where all could see.
So Kansas goes on and kills, Kansas was very hot, tight band. During the set, Tyler is pacing the sideline backstage getting more and more incensed. Kansas does one encore, Tyler is livid. They do a second encore and Tyler loses his brain cell and rips out the fake cables, which only pissed him off more since that didn't stop Kansas. After that song, Dave Hope, Kansas' bass player, threw down his bass and went to over to explain to Tyler using very colorful language what he was doing wrong. Dave Hope was a big guy back then so it was very impressive. Afterwards, other members of Aerosmith apologized to Kansas for Tyler's behavior.