Klassen rhymes with:
clason, classen, classon, clason, classen, classon, glasson, lassen, mcglasson, assassin, bason, cason, casson, chason, clason, classen, classon, fason, fasten, gassen, glasson, hassen, hasson, kassan, kassen, kasson, lassen, masson, mcglasson, nason, passon, sasson, stassen
Klassen sounds like:
kalugin, kaluzny, keelson, kellison, kelson, kilcoin, kilcoyne, klaassen, klasen, klejna, klesken, kligman, klugman, klusman