MATT SERLETIC Creating big hits takes talent, toil and the ability to thrive under pressure            By Michael Gallant When Grammy-winning producer Matt Serletic steps into the studio to record with the likes of Rob Thomas, Carlos Santana, Aerosmith or Joe Cocker, he brings lots more than a knack for piecing together catchy tunes. Thanks to exceptional talents as a musician, songwriter, arranger and music business executive, Serletic has...