Angela Hewitt — esteemed as one of today’s master interpreters of J. S. Bach, having recorded and performed the Baroque master’s complete ouvre for ten fingers to great acclaim in recent years, has embarked on her next chapter, The Mozart Odyssey, a survey of Mozart’s piano concertos around the globe. Hewitt began her latest concert in Kaufman Auditorium at 92NY with Mozart’s Phantasia, beautifully paced and technically graceful, adding her own flare to the written ornaments — as an opera in miniature.