time to improvise - View this location on map 'Catch the second set at the dark, intimate regattabar at the charles hotel ( 617-661-5000), which has long been the leading jazz spot in town; this fall, it's the host to be-bop torch-bearers like jackie mclean and billy taylor. new in town is the real deal jazz club and cafe (cambridge multicultural arts center, 41 second street; 617-876-7777), run by fenton hollander, the regattabar's longtime booker. with dave holland and the south african pianist abdullah ibrahim on tap, as well as a smattering of latin jazz, the fledging club seems poised for a duel. ticket prices vary at both, but generally run $15 to $30.'' New York Times 1 bennett street, Cambridge, MA Nightlife

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