The array of musical forms was vast during this period; they were considered forms because there was a formal structure to each. I’ll mention just a few here (and of course in each case there are exceptions).
You can find extensive glossaries of music terms at Naxos and B. Hollis.
NOTE: In many of the YouTube musical samples that follow, you'll have to click
through the advertisements to get to the music.
Étude (Fr. “study”) Usually a short composition of considerable difficulty intended as practice material. Those of Debussy, Liszt and Chopin appear regularly in the concert piano repertoire.
Example: Chopin's
Étude N°3 in E Major, Op.10 'Tristesse', performed by
the Chinese pianist Lang Lang. (5:38)
Divertimento (It. “to amuse”) An informal, light, entertaining piece for small ensemble in a social setting, as opposed to more formal religious pieces.
Fugue (It. “a running away, flight”) A theme, announced at first in one part alone, is subsequently imitated by all the other parts in turn. The name is derived from the idea that one part starts on its own and is pursued by the parts that follow.
Sonata (It. “to sound”) Composed for one or two instruments consisting usually of three sections: (1) Introduction & Exposition, (2) Development, and (3) Recapitulation & Coda. This sonata form is the structure of most concertos and symphonies. (And if you attend a concert in the sonata form, be sure not to applaud between movements—it’s distracting to the performers.)
Example: Beethoven's Sonata N°14 '
Moonlight' performed by Daniel Barenboim (16:49)
Concerto (It. “arrange by mutual agreement”) A piece for one solo instrument (usually piano, violin or horn) in conversation with the full orchestra in three contrasting movements.
Examples: Rachmaninoff's
Piano Concerto №2 performed by blind pianist Nobuyuki Tsujii
at the BBC Proms (34:05), Tchaikovsky's
Violin Concerto performed by Itzhak Perlman and the Philadelphia Orchestra conducted by Eugene Ormandy (36:30),
and Beethoven's Piano Concerto №5
"Emperor" performed by Krystian Zimerman and the Vienna Philhamonic conducted by Leonard Bernstein (41:24)
Symphony (L. “concordant in sound”) A large work involving a full orchestra, usually in four movements:
1. An opening sonata or allegro (brisk, lively)
2. A slow movement, ex. Adagio (slow and lyrical)
3. A minuet (a courtly dance) or scherzo (a “joke”, light hearted)
4. Finale (fast and furious) often in the rondo form: A-B-A-C-A-D-A
Examples: Schubert's
Symphony №5 in B Flat Major, D 485, performed by
The Tel Aviv Soloists conducted by Barak Tal (24:46), Mozart's Symphony No 41 "
Jupiter" performed by Orquesta Sinfónica de Galicia conducted by
Lorin Maazel (41:15), and Beethoven's
Symphony №5 performed by
the Vienna Philharmonic Orchestra conducted by Leonard Bernstein (37:56)
Opera (L. “works”) An extended dramatic composition in which all parts are sung to instrumental accompaniment; usually includes arias, choruses, and recitatives.
Example: Giacomo Puccini’s opera
Tosca in
a movie version with English subtitles, by the New Philharmonia Orchestra conducted by Bruno Bartoletti, with
synopsis. (2:03:55)
Ballet (Fr. “a little dance”) Expressive dance with gestures and movements of grace and fluidity.
Example: Tchaikovsky’s
The Nutcracker performed by the
Classical Ballet & Opera House, with
synopsis. (1:10:40)