Five songs on Boston's first album in more than a decade have "love" in their titles; three revise songs from its predecessor, Corporate America. That album came out in 2002, five years before Brad Delp committed suicide. His singing survives on a few tracks here, surrounded by other reassuring voices, male and female. "Didn't Mean to Fall in Love" keeps "More Than a Feeling" chords alive, too; "Sail Away," inspired by Hurricane Katrina, moves from trip-hop to prog-metal. Everywhere, Tom Scholz fine-tunes the angelic-choir harmonies and aerosol-guitar crescendos until they're spotlessly, unmistakably Bostonlike. Some things never change — but remembering a sound isn't always enough.