While it would be a little too extreme to -- to paraphrase Frank Zappa -- call this Bruce Hornsby's "Shut Up and Play Your Piano" album, Halcyon Days is something of a return to roots for the erstwhile ivory tickler. Whether cleaving gentle, island-kissed polyrhythms, as on the wry morality play "Gonna Be Some Changes Made," or tackling things entirely all-but-solo, as on the Crescent Citytinged Randy Newman sound-alike "Heir Gordon," Hornsby ensures that those 88 keys are stationed front and center. That's no mean feat when you consider the fact that he's teaming with guests such as Eric Clapton, who adds guitar to three songs while harmonizing on the good-time jaunt "Candy Mountain Run"; Sting, whose wavering tenor adds an added layer of poignancy to the title track; and Elton John, Hornsby's duet partner on "Dreamland," a late-night musing that wafts along smoothly on waves of orchestration. But despite his low-key demeanor, Hornsby has always been a forceful performer with an easily recognizable style, which he plies with abundant charisma on Halcyon Days. David Sprague, Barnes & Noble