Description:At the second day of the MDA Show of Strength filming, singer and actor Jesse McCartney showed his support for the Muscle Dystrophy Association, and also gave ET an update on his current happenings. "I'm the process of finishing, actually, some new music that I'll be releasing probably later this year," McCartney revealed of his fourth studio album. The 25-year-old star also mentioned a film project that had just wrapped.
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