"Concertina" is the second song on The Mars Volta's first release work Tremulant EP. It Flows with a continuous flow of fiddley guitar pieces, long instrumentals but the vocals are often drowned out by the ferocious guitar playing. This is a shame as Cedric has such a wonderful voice but luckily the band improved their production vastly on their studio album. It rages in on a burst but settles into a moody ebb and flow unmistakably reminiscent of "Roulette Dares", with the same aggressive heatbreak catharsis feel.