A cappella is a musical term that means singing without instrumental accompaniment. In contrast, the antonyms for a cappella are musical terms that signify the use of instruments in the performance of the musical piece. One example of the antonyms for a cappella is orchestral music, which involves the use of an orchestra with various instruments, including strings, brass, and percussion. Other antonyms for a cappella include jazz, blues, rock, pop, and country music, which all involve the use of instruments in creating their unique sounds. Ultimately, the antonyms for a cappella highlight the immense diversity of music and the various ways in which it can be performed and enjoyed.