楽曲は英語で
tune

英語の定義

楽曲
1. n. musical composition, number, tune, piece of music

tune
1. 曲, チューン

tune
1. n. A melody.
2. n. A song, or short musical composition.
3. n. (informal) The act of tuning or maintenance.
Your engine needs a good tune.
4. n. The state or condition of being correctly tuned.
Your engine is now in tune.
This piano is not in tune.
5. n. (slang) A very good song.
You heard the new Rizzle Kicks song? —Mate, that is a tune!
6. n. (obsolete) A sound; a note; a tone.
7. n. (obsolete) Order; harmony; concord.
8. v. To modify a musical instrument so that it produces the correct pitches.
to tune a piano or a violin
9. v. To adjust a mechanical, electric or electronic device (such as a radio or a car engine) so that it functions optimally.
10. v. To make more precise, intense, or effective; to put into a proper state or disposition.
11. v. To give tone to; to attune; to adapt in style of music; to make harmonious.
12. v. To sing with melody or harmony.
13. v. (South Africa, slang) To cheek; to be impudent towards.
Are you tuning me?

composition
1. n. The proportion of different parts to make a whole.
2. n. The general makeup of a thing or person.
3. n. (obsolete) An agreement or treaty used to settle differences; later especially, an agreement to stop hostilities; a truce.
4. n. (obsolete) An agreement to pay money in order to clear a liability or obligation; a settling.
5. n. (legal) an agreement or compromise by which a creditor or group of creditors accepts partial payment from a debtor.
6. n. A mixture or compound; the result of composing.
7. n. An essay.
8. n. (linguistics) The formation of compound words from separate words.
9. n. A work of music, literature or art.
10. n. (printing) Typesetting.
11. n. (mathematics) Applying a function to the result of another.
12. n. (obsolete) Consistency; accord; congruity.
13. n. Synthesis as opposed to analysis.
14. n. (painting, photography) The arrangement and flow of elements in a picture.
15. n. (object-oriented programming) Way to combine simple objects or data types into more complex ones.