The kanji 楽 primarily conveys the concepts of "enjoyment," "pleasure," "comfort," and "ease." It suggests a state of being free from stress or hardship, and experiencing happiness or contentment. It can also imply a sense of relaxation and being at peace.

・On-yomi (音読み): ⚫︎ ラク (raku) ⚫︎ ガク (gaku) ・Kun-yomi (訓読み): ⚫︎ たの（しい） (tano(shii)) - enjoyable, fun ⚫︎ たの（しむ） (tano(shimu)) - to enjoy

⚫︎ 音楽 (ongaku) Translation: music ⚫︎ 楽しい (tanoshii) Translation: fun, enjoyable ⚫︎ 楽な (rakuna) Translation: easy, comfortable

The kanji 楽 is a phono-semantic compound (形声文字, keisei moji). The left part is the radical 木 (ki), meaning "tree" or "wood." The right part is 白 (haku/shiro), which can mean "white" or "clear". Originally, the kanji may have been related to the enjoyment experienced by a musician playing music on a wooden instrument. The overall meaning evolved to represent enjoyment and ease. The combination suggests that music is a source of joy that can be enjoyed in a state of relaxation.