Indie rock sledgehammers … And You Will Know Us by the Trail of Dead invaded D.C. last night and played a spectacular show to a small but rabid audience at the 9:30 Club. The band was showing off their new, revamped lineup which features a new bassist (whom singer/guitaist Conrad Keely referred to only as “tall fuck”) as well as an additional drummer named Donnie. Having an extra percussionist lent even more bombast to…