IPA: /ˈklæsɪkli/
KK: /ˈklæsɪkli/
In a way that follows traditional styles or methods, often related to ancient Greek or Roman culture.
The music was classically composed, reflecting the styles of the great composers.
Classically → It is formed from "classicus" (from Latin, meaning of the highest rank or class) and the suffix "-ally" (meaning in a manner relating to). The word "classically" refers to something done in a manner that is characteristic of the highest standards or traditions, often relating to classical art or literature.
Think of 'classicus' meaning of the highest rank, and remember that 'classically' refers to doing something in a way that reflects those high standards.