Song
noun
One of the kanji's meanings is song and this word means exactly that: a song.
Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word:
Think about a song... but not just any song... think about the utter (うた) song, and make it up right now and sing it out loud. What does the utter song sound like? Why do you love utterances so much that you made a song about them?
歌を歌う
to sing a song
歌を口ずさむ
to sing to oneself, to hum a tune
歌を作る
to compose a poem
これって、日本の歌ですよね？
This is a Japanese song, isn't it?
今日ショッピングモールでかかってた歌の名前、知ってますか？
Do you know the name of the song that was playing at the shopping mall today?
君のために作った歌だよ。
It's a song I made for you.