the day i hit the roof

yes...i hit the roof todae..i was so pissed off with boss that i cried in front of her...it started like this..
(at staff meeting)
boss: all teachers are to prepare 3 piano pieces to play in front of my husband. He will be assessing ur level of competence in playing the piano and teach u all to play the piano..
me: i am not playing the piano. i told u before that i dun enjoy playing the piano so i wont be playing.
boss:why not? u got a grade 8. u dun have to play very difficult songs. just play any song will do.
me: n0. i told u before i wont play.
boss: then it is a failure lah. U learn so high grade then dun play.
me: yes. i admit it is a failure. so?
anyway the other conversation revolved ard why i shd just play..i was so pissed off that i refused to tok to boss after that....she noticed my black face and called me into the office to tok to me. told me i shd not have reacted so strongly abt it. that is when i started crying because i was feeling so frustrated. i told her that i did not want to play because during the interview, i already specified that even though i learnt the piano, i do not enjoy playing and i have stop playing for the last 10 yrs already.now she is making me feel tat after i have started working here, i am trapped and there are so many hidden requirements that i have to fulfill...irritating....i told her straight in the face that i feel cheated..in the interview said ok no need to play..now inside need to play...i told her that this is not a music sch, why shd there be this requirement...told her if i promised her during the interview that i will play the piano then i will play the piano of course...i am so fed up with her!!