A world premiere, a white-garbed neoclassical killer and a trio of demanding pas de deux: How do the principal dancers of the Miami City Ballet get out of bed in the morning after performances such as Tuesday's at the Philharmonic Center?

They certainly must: They were performing the same program again Wednesday here. The company is on a high this season with a new work created by British choreography wunderkind Liam Scarlett and the memory of a sold-out summer tour of Paris dancing in their heads — the way sugar plums would. Perhaps that fueled the sustained energy for three tough works Tuesday at the Phil, buttressed by the Naples Philharmonic Orchestra.