I can tell that ‘play the gayageum,’ having a definite article, is proper from ‘play the violin’ in CGEL,p.408. But how about ‘samulnori’? Do I have to add the or not? From ‘Hilda can dance the waltz’ (CGEL,p.408) (for dance), and ‘play the violin’ (for playing the musical instrument), it perchance needs to take the, because ‘samulnori’ is a combination of playing musical instruments and dancing. But there's no way for me to know.
When the verb is changed form ‘play’ to ‘practice’, is that you replied is applied alike?
(2.a) I practice the gayageum.
(2.b) I practice the samulnori.