Sondheim rhymes with:
sundheim, windheim, sundheim, waldheim, windheim, anaheim, blenheim, durkheim, guggenheim, guggenheim's, hochenheim, ingelheim, kuenheim, nesheim, opheim, oppenheim, solheim, straszheim, sundheim, waldheim, warehime, werdesheim, windheim, wineheim
Sondheim sounds like:
saindon, samedan, sandeen, sanden, sandin, sandino, sandman, sandmann, sandom, sandon, sandtown, sanitation, santana, santayana, santin, santini, santino, santon, santone, santoni, schwendeman, segmentation, sentman, shantytown, shenton, simonton, sindona, sindoni, sinton, smetana, smithtown, smitten, smoothen, snedden, sneddon, snethen, snowden, snowdon, somethin', sometime, sumatoma, sumatomo, sumitomo, summation, sundeen, sundheim, sundin, sundown, suntan, swaminathan, swanton, swinton