These are happy days for Al Di Meola.The veteran, genre-spanning guitarist, composer and producer released a new album, "Opus," in February and watched it debut at No. 1 on the Billboard Jazz charts. It's the latest addition to more than four decades of music, on his own and in collaborations such as Return To Forever, in which Di Meola has explored a gamut of jazz and World Music styles, winning numerous awards and playing alongside musical giants such as John McLaughlin, Paco de Lucia and many others.