KATY PERRY changes pace with the piano-laced ballad "Not Like the Movies," off Teen-age Dream, due Aug. 24. $1.29 at iTunes.com.
KELLY ROWLAND rises above a romantic rival on "Grown Woman," a midtempo jam from her self-titled third solo album, due this fall. $0.99 at rhapsody.com.
LINKIN PARK commands your attention with the theatrical "Catalyst," from the rock band's next album, A Thousand Suns, out Sept. 14. $0.99 at amazon.com.
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