original composition

noun
UK /əˈrɪdʒ.ɪ.nəl ˌkɒm.pəˈzɪʃ.ən/
US /əˈrɪdʒ.ə.nəl ˌkɑːm.pəˈzɪʃ.ən/

A piece of music or writing that someone makes up all by themselves.

The young pianist played an original composition at the school concert.


OTHER MEANINGS

2. A piece of art or writing created without copying anyone else.

Her painting was an original composition, not a copy of a famous work.

3. The act of creating something new for the first time.

The original composition of the team took place in 1990.

4. A musical work written by a student as part of their studies.

For his exam, he submitted an original composition for piano.