菜鸟问问题

17,  (the flowering) of African American talent (in) literature,
music, and (art) in the 1920`s in New York city became (to know) as the
Harlem Renaissance.
这道体里面的literature,music, art,是不可数,还是集合名词??前面怎么没有冠词啊?       先谢谢了!!!