求翻译：甲方签订的与乙方演艺活动有关的合同及相关细则，在合法并事先通知乙方的前提下，乙方应尽责履行其义务。是什么意思？

The contract signed by Party A and B performing arts activities and the relevant rules in the legal and prior notice to Party B under the premise, the B should be due diligence to fulfill its obligations.

A party with the party performing arts events like the contract and related articles on the legal, Party B and the prior notice, Party B shall be duly fulfill their obligations.

The party of the first part sign performs an art the active related contract with the second party and the correlation regulation, in legitimate and informs under beforehand second party's premise, the second party should fulfill responsibility fulfills its duty.

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