▁of ▁chamber ▁music , ▁masses ▁and ▁other ▁religious ▁music , ▁and ▁numerous ▁d ances , ▁di vert iment os , ▁and ▁other ▁forms ▁of ▁light ▁entertain ment . ▁ ▁How ▁Moz art ' s ▁compos itions ▁are ▁listed ▁▁ ▁The ▁indic ation ▁" K ." ▁or ▁" K V " ▁refers ▁to ▁ ▁( K ö ch el ▁catalog ue ), ▁i . e . ▁the ▁( more ▁or ▁less ) ▁chron ological ▁( i . e . ▁by ▁composition ▁date ) ▁catalog ue ▁of ▁Moz art ' s ▁works ▁by ▁Ludwig ▁von ▁Kö ch el . ▁This ▁catalog ▁has ▁been ▁am ended ▁several ▁times , ▁leading ▁to ▁ambigu ity ▁over ▁some ▁K V ▁numbers ▁( see ▁e . g . ▁Sym phony ▁No . ▁ 2 5 ). ▁ ▁The ▁compos itions ▁of ▁Moz art ▁listed ▁below ▁are ▁grouped ▁them atically , ▁i . e . ▁by ▁type ▁of ▁composition . ▁Not ▁all ▁them atic ▁groups ▁of ▁Moz art ' s ▁works ▁have ▁a ▁separate ▁number ing ▁that ▁is ▁generally ▁accepted : ▁Kö ch el ▁only ▁numbers ▁sym phon ies ▁( 1 ▁to ▁ 4 1 ), ▁piano ▁concert os ▁( 1 ▁to ▁ 2 7 , ▁leaving ▁out ▁some ▁early ▁trans cri ptions ▁by ▁Moz art ) ▁and ▁a ▁few ▁other ▁groups . ▁On ▁the ▁other ▁hand , ▁for ▁most ▁chamber ▁music ▁and ▁vocal ▁music ▁there ▁is ▁no ▁such ▁number ing ▁( or ▁at ▁least ▁no ▁generally ▁accepted ▁one ). ▁ ▁Only ▁relatively ▁few ▁of ▁Moz art ' s ▁compos itions