The "classical symphony" features four separate movements: a sonata, or up-tempo section; an adagio, or slow movement; a minuet, or 3/4 dance section; and another up-tempo piece. This format was developed in the late eighteenth century by composers such as Mozart and Haydn. Nonetheless, despite its typical form, a symphony does not always have to adhere to such a strict format.

"Allegro" is one of the many Italian words that can be placed above a staff on sheet music, to indicate at what tempo a piece should be played. "Allegro" indicates a brisk pace, and for the musician to play the piece brightly. Usually, a tempo marker is given for an entire piece, but sometimes multiple tempo markers can be given throughout a piece.

The concertmaster is the leader of the musicians in an orchestra, and in some smaller ensembles takes the place of a conductor in controlling the pace, rhythm, and timing of a piece. The concertmaster is almost always a violinist, and sits in the front row of the orchestra, so the audience can clearly see him or her.

The modern piano was developed from the Baroque harpsichord, which plucked instead of hammered the strings in the soundboard. In the late eighteenth and early nineteenth centuries, particularly fueled by Romantic compositions, the piano was made to both be larger and sound larger. Around this time, the keyboard was expanded to include 88 keys, to give it a full 7 1/3 octaves, where the standard for a piano remains today.

In order to identify which singers can sing which part in classical music, human voices are divided into various parts. The highest, and typically most showy, is the soprano, a category usually reserved for the highest female registers. A soprano is usually the lead part and takes some of the most impressive solo work.