h . C ▁ 1 4 . 0 4 ▁(" No . ▁ 6 ") ▁( 1 7 8 0 ) ▁( att ributed ▁to ▁Johann ▁Friedrich ▁E ck ) ▁ ▁Vi olin ▁Con cer to ▁in ▁D ▁major , ▁" K ol b ", ▁K . ▁ 2 7 1 a / 2 7 1 i ▁(" No . ▁ 7 ") ▁( 1 7 7 7 ) ▁ ▁Vi olin ▁Con cer to ▁in ▁D ▁major , ▁" Ad é la ï de ", ▁K . ▁An h . ▁ 2 9 4 a / An h . C ▁ 1 4 . 0 5 ▁( act ually ▁written ▁by ▁Mar ius ▁Cas ades us ) ▁ ▁Horn ▁concert os ▁▁ ▁Ar gu ably ▁the ▁most ▁widely ▁played ▁concert os ▁for ▁horn , ▁the ▁four ▁Horn ▁Con cert os ▁are ▁a ▁major ▁part ▁of ▁most ▁professional ▁horn ▁players ' ▁re per toire . ▁They ▁were ▁written ▁for ▁Moz art ' s ▁lif el ong ▁friend ▁Joseph ▁Le ut geb . ▁The ▁concert os ▁( es pecially ▁the ▁fourth ) ▁were ▁written ▁as ▁virt u oso ▁vehicles ▁that ▁allow ▁the ▁solo ist ▁to ▁show ▁a ▁variety ▁of ▁ab ilities ▁on ▁the ▁val vel ess ▁horn s ▁of ▁Moz art ' s ▁day . ▁ ▁The ▁Horn ▁Con cert os ▁are ▁character ized ▁by ▁an ▁elegant ▁and ▁hum orous ▁dialog ue ▁between ▁the ▁solo ist ▁and ▁the ▁or chestra . ▁Many ▁of ▁the ▁aut ograph s ▁contain ▁j okes ▁aim ed ▁at ▁the