Boy Eats Drum MachineBoy Eats Drum Machine, Onry Ozzborn & the Gigantics, Mad Rad, No Fi Soul Rebellion at Comet Tavern, 9 p.m., $7Portland’s Johnny Ragel brings the term “One Man Show” to a whole newlevel. He might play electronica with sampled beats laid overinstrumental tracks, but Ragel — who performs under the name Boy EatsDrum Machine — isn’t the sort of DJ who sits idly behind histurntables, occasionally touching his hand to his headphones. Instead,he bounces around an elaborate musical set-up, banging on a drum,shaking a tambourine and even playing his saxophone. The result: BEDMsounds like a jazz-electronic fusion on record and looks like awell-synchronized dance on stage. Watching him carefully time his everymovement — from carefully dropping the needle on a records’ track toeffortlessly beating a drum with only a drumstick — provides insight intohow artfully crafted Ragel’s music is. He doesn’t just create beats andlay tracks; this man feels every note. PAIGE RICHMOND”Full Metal Discharge” feat. Sunday Night Blackout, Emeralds, Blood Hot Beat, The Get Off, DJ Fentar & DJ Jaret Winters at Chop Suey, 9 p.m., $5Much like a boyfriend who looks like a girlfriend, the refrain”Heaven’s so far from a place like this” bears a striking resemblanceto the “Somebody Told Me” lyric “Heaven ain’t close in a place likethis.” But Emeralds infuse the line with road-weary swarthiness anddark romanticism, exactly the vibe the Killers have spent severalalbums trying to capture. Musically, Emeralds touchstones includeHawkwind and Blue Cheer, but the Seattle sextet never ventures so farinto the fuzzy psychedelic vortex that it obscures its hooks or mufflesits raucousness. For example, “In These Days” reaches the eleven-minutemark (longer live, given that the recorded version’s fade endingtranslates as an ellipsis) without wasting time on obscure tangents.Sharp pace changes, dual-guitar harmonic solos and drum-roll eruptionskeep these epic songs compelling throughout their durations. TheHammond organ’s churchy tones lend a sacred element, offering sanctuaryto characters whose vices are killing them. Emeralds concerts alsoprovide salvation, especially for those who didn’t know they – or rockshows – needed saving. ANDREW MILLER