Convention for printing "3" with triplets
I am editing a piece of Baroque keyboard music that consists of variations, each eight bars long. Four of the variations are entirely in triplets. In such situations I think one doesn't keep printing the "3" since, after playing a measure or two, the performer will be in no doubt that triplet motion is continuing. Is there a convention about how many "3"s to print -- maybe the first bar in each hand? First two bars? I don't think I need to put any "3"s over the next three variations, since the triplets just keep going, but let me know if that's not right.