Arias for voice and orchestra

In Leopold Mozart’s list of works that his son Wolfgang composed between the ages of 7 and 12, “15 Arias” are mentioned that were composed in London and Den Haag. The majority of these arias must be considered lost, because only four arias (KV 21, KV 23, KV 78, and KV 79) can be definitely dated to this period. This group may also have contained the lost compositions KV 633 and KV 717.