music: For information on types of music see such articles as absolute music; aleatory music; chamber music; church music; computer music; electronic music; jazz; program music; rock music; serial music; and spiritual. In addition, see entries on the music of various nations and peoples, including African music; Arabian music; Balinese music; Chinese music; Greek music; Hindu music; Japanese music; Javanese music; and Jewish liturgical music. The technical aspects of music, such as theory, notation, and tone, are treated in such general articles as theory and musical notation, and in more specific entries, including counterpoint; harmonic; harmony; key; measure; mode; musicology; note; pitch; polyphony; rhythm; scale; syncopation; tablature; temperament; tonality; tone; transposing instrument; and tuning systems. There are numerous articles on various musical forms, including cantata; concerto; march; nocturne; opera; oratorio; polonaise; sonata; song; and symphony. In addition to such survey articles as concert; conducting; musical instruments; music festivals; orchestra and orchestration, there are separate articles on musical instruments, treated singly, e.g., clarinet; harp; trumpet, or in groups, e.g., reed instrument; stringed instrument. In addition to the entry on voice, there are separate articles on alto; baritone; countertenor; soprano; and tenor. Information on individual composers and performers can be found in biographical entries on composers, e.g. Monteverdi, Claudio; Puccini, Giacomo; and Schubert, Franz Peter; musicians, e.g., Beiderbecke, Bix; Gieseking, Walter; Richter, Sviatoslav; and singers, e.g., Deller, Alfred; Merrill, Robert; Sembrich, Marcella; and Sinatra, Frank.