Choose your answer: is the following review positive or negative?

We arrived fairly early on a Saturday night for Las Vegas expecting a traditional piano bar. We came up with a list of several songs that were good sing along songs. It wasn't too busy and we gave a $20 tip along with the list of songs. My sister also gave a list and a $10 tip. The piano player didn't seem to know most of them (he could play American Pie by Don McLean) that that was about it. Instead of playing any of our songs we requested or admitting he didn't know them, he turned the mike over to the bartender (I admit was a great singer) and a few people who shouldn't be singing. That included the rap song that some may consider art. It used the M-F*&^%r word in almost every line. The main reason why I would never go back there is the way the piano player took our tip money and ignored all of our requests. I think he was more interested in playing the piano and letting others do the entertaining. I think their venue should be listed as Karaoke and Open Mike night. It defnintely was not piano bar, it lonly housed a piano.

Possible answers: (A). negative; (B). positive;
(A).