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A program can contain just one, full-length piece — like the two premieres this month, Craig Taborn’s “Busy Griefs and Endangered Charms” and Anna Thorvaldsdottir’s “Ubique” — or it can be a batch of new works.

“Busy Griefs,” which premieres at the Kitchen on the 24th, calls for its performers to wander through the audience and navigate notated and improvised material; “Ubique,” at Carnegie Hall on the 25th, however, is fully notated, a journey of its own, but with nothing left to chance.

Later, another anonymous message appeared under Toscanini’s: “Nomina stultorum sunt ubique locorum,” or “The names of fools appear everywhere.”

So he mixed each of several hundred aliquots into tubes of water containing P. ubique.

Until now, those in the know would probably have answered Pelagibacter ubique, the most successful member of a group of bacteria, called SAR11, that jointly constitute about a third of the single-celled organisms in the ocean.