Jem Aswad Senior Music EditorStrokes frontman Julian Casablancas has signed a worldwide publishing agreement with Concord Music Publishing, covering his past and future solo works (including his 2013 song with Daft Punk, “Instand Crush”) and various projects including The Voidz. Casablancas won his first Grammy last weekend, for the Strokes’ album “The New Abnormal.”“We are beyond excited that Julian has joined Concord Music Publishing.