Warbling

The larks are warbling in the air.

In the woods and meadows, and on the mountains the flowers were blooming amid the buzzing murmurs of the bees, the warbling of the birds, and the bleating of the lambs.

the warblings of birds in the hedgerows

the quaverings and warblings in lutes and pipes

The Game of Thrones novels were best sellers without fleshed-out Dothraki; the languages in Star Wars, one of the most successful franchises ever, are mostly gibberish, even if Han Solo claims to understand Chewbacca’s bestial warbling.