Susan Treacy, formerly of TBWA/Chiat/Day/San Francisco, and Tim Gillingham, formerly of Arnold Worldwide/Boston, have joined Fallon/Minneapolis as group creative director/copywriter and copywriter, respectively. Treacy's credits include last year's Lion-winning Fox Sports campaign for the NHL, while Gillingham served as copywriter on the Emmy-nominated VW spot "Squares." ... Vadim Perelman, director of the acclaimed feature House of Sand and Fog, is returning to commercials work via Santa Monica production company Tate USA. ... Jill Trimble, formerly of Mullen Pittsburgh, has joined Pittsburgh agency Blattner Brunner as an associate creative director and art director. ... Santa Monica's Ten Music has added Canadian indie label Arts & Crafts -- home of the band Broken Social Scene -- to its roster, and will represent the company for music licensing and scoring. ... Audio engineers Casey Chester -- formerly of McHale Barone -- and freelancer Adam Charity have joined New York recording studio 38 Greene.