Last summer, New York City's resident digital pop band Anamanaguchi—songwriters and guitarists Peter Berkman and Ary Warnaar, bassist James DeVito, and drummer Luke Silas—teamed up with Tokyo's virtual J-pop princess Hatsune Miku (who is, quite literally, a software program called Vocaloid) on "Miku," a twinkling electro-pop anthem about a musical avatar come to life. Today (March 24) the group fo