Explain the difference between..a) an orchestra and a band(b) percussion instruments and wind instruments(c) a concert and a rehearsal(d) a composer and a musician​

(а)The orchestra is a large group of instrumental musicians. Unlike chamber ensembles, in the orchestra, some of its musicians form groups that play in unison.

(b)Wind musical instruments - a family of musical instruments in which the sound source is a column of air contained in them;Percussion musical instruments are musical instruments in which the sound is produced by blows with a hand, fingers, a metal stick or a special mallet.

(c)A concert is a public performance of musical works, opera, ballet, pop, etc. numbers according to a predetermined program.Rehearsal - vivchennya and repetition of texts, scores, actors during the hour of the Maybut show and the concert on the stage.

(d)A musician is a person who is to serve, to vykonovat music on musical instruments, if not musically nadana, in a shirsh we will know every person, what to add, to provide, or to represent music.Composer - composer of musical works.