Ryan and Hays Holladay (formerly of the Brooklyn pop/rock band The Epochs ) played their "goodbye NYC" show at Pianos this past Monday under the new moniker Bluebrain. The two brothers – who are moving to Washington DC – had residency at the Lower East Side venue; performing every Monday this month to showcase their electronic rock songs off of their newly-released LP, “Soft Power.” Bluebrain smoothly transitioned from mellow, melodic songs like “Each Time I Think” to downright body-jolting jams like “Ten by Ten”. Athough there are only two of them onstage, the brothers managed to achieve an impressive, almost majestic sound weaving their voices with looped instruments like drums and violin and other electronics. With each song, they cranked out more and more energy and showcased some serious musical skill. When the set was over, one person in the audience yelled, “Three more songs!!” – there’s a fan who knows how to make a bargain…