Flor has been touted as vocalist Gretchen Parlato’s Brazilian-inspired project, and that’s true enough. But don’t expect a series of breezy bossa novas. The 45-year singer/composer has routinely strived for next-level creativity, and Flor (“flower” in Portuguese) is no exception. Bossas and sambas are present, yes, but so is a waltz-time ballad (“What Does a...