Having celebrated its 40th anniversary last week, Physical Graffiti is the latest in the series of Led Zeppelin reissues that began last year. Zeppelin guitarist Jimmy Page oversaw the remastering of the original release, helping give classic tracks like “Custard Pie,” “Houses of the Holy,” and “Trampled Under Foot” a sonic makeover of sorts. As with the other reissues in the series, this edition of Physical Graffiti is accompanied by a companion disc featuring seven previously unreleased tracks. Included among those songs is a rough mix of “Kashmir” along with an early mix of “Trampled Under Foot,” known as “Brandy & Coke.” This reissue is the perfect excuse to rediscover what made Led Zeppelin so great.