有空的时候，我总喜欢听古典音乐。

I always enjoy listening to classical music in my free time.

Source: Tatoeba

Sentence Composition

1 有空 yǒukòng to have time (to do sth)
=2 的 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. dì or di in poetry and songs
=2 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=2 的 dí really and truly
=2 的 dì (bound form) bull's-eye; target
3 时候 shíhou
  1. time
  2. length of time
  3. moment
  4. period
4 我 wǒ
  1. I
  2. me
  3. my
5 总 zǒng
  1. (bound form) general; overall
  2. to sum up
  3. in every case; always; invariably
  4. anyway; after all; eventually; sooner or later
  5. surely
  6. (after a person's name) abbr. for 总经理 zǒngjīnglǐ or 总编 zǒngbiān etc
6 喜欢 xǐhuan to like; to be fond of
=7 听 yǐn smile (archaic)
=7 听 tīng
  1. to listen to; to hear
  2. to heed; to obey
  3. a can (loanword from English "tin")
  4. classifier for canned beverages
  5. to let be; to allow (Taiwan pr. tìng)
  6. (literary) to administer; to deal with (Taiwan pr. tìng)
8 古典音乐 gǔdiǎnyīnyuè classical music