Clasen rhymes with:
klasen, klasen, leysen, basin, caisson, capsaicin, cayson, chaisson, chasen, chasten, freemason, grayson, gustaveson, hasten, jason, klasen, leysen, mason, salveson, spleisson
Clasen sounds like:
calcagni, calcagno, calcium, calgene, calgon, calkin, callaghan, calligan, callison, chalasani, chilson, claassen, clason, classen, classicism, classman, classmen, classon, clausen, clauson, claussen, clawson, claxon, clayson, closson, coalson, colchicine, coleson, colgan, colgin, coliseum, collagen, collegian, colligan, collignon, collision, collison, colloquium, collusion, cologne, colosimo, colosseum, colson, coulson, culkin, culligan, cullison, cyclohexane