Apainterhangshisorherfinishedpicturesonawall,andeveryonecanseeit
Acomposerwritesawork,butnoonecanhearituntilitisperformed
Professionalsingersandplayershavegreatresponsibilities,forthecomposerisutterlydependentonthem
Astudentofmusicneedsaslongandasarduousatrainingtobecomeaperformerasamedicalstudentneedstobecomeadoctor
Mosttrainingisconcernedwithtechnique,formusicianshavetohavethemuscularproficiencyofanathleteoraballetdancer
Singerspracticebreathingeveryday,astheirvocalchordswouldbeinadequatewithoutcontrolledmuscularsupport
Stringplayerspracticemovingthefingersofthelefthandupanddown,whiledrawingthebowtoandfrowiththerightarm—twoentirelydifferentmovements
Singersandinstrumentshavetobeabletogeteverynoteperfectlyintune
Pianistsaresparedthisparticularanxiety,forthenotesarealreadythere,waitingfort