I think in the following way: the Buddha's teaching can be categorised in three parts: ethics, meditation, insight. Things like dances, rituals, songs, ornaments, etc. fall under the category of ethics. Some of them can be considered bad behaviour and some good behaviour, partially dependent upon precepts and mostly on social norms. This way there is virtually no need to think in terms of culture but rather the Dharma.
"There is no such thing as the real mind. Ridding yourself of delusion: that's the real mind."
(Sheng-yen: Getting the Buddha Mind, p 73)
"Neither cultivation nor seated meditation — this is the pure Chan of Tathagata."
(Mazu Daoyi, X1321p3b23; tr. Jinhua Jia)
“Don’t rashly seek the true Buddha;
True Buddha can’t be found.
Does marvelous nature and spirit
Need tempering or refinement?
Mind is this mind carefree;
This face, the face at birth."
(Nanyue Mingzan: Enjoying the Way, tr. Jeff Shore; T2076p461b24-26)