Notes' rhymes with:
connotes, denotes, note's, notes, bloats, boat's, boats, capote's, coat's, coats, connotes, cotes, denotes, devotes, floats, gloats, goat's, goats, misquotes, moats, motes, note's, notes, oates, oats, outvotes, ploetz, promotes, quotes, throats, totes, vote's, votes
Notes' sounds like:
nadgwick, nadja, nantes, nantz, natasha, natasha's, natchez, natchez', natchez's, natec's, natick, nato's, nats, natsios, natzke, nautica, ned's, neddick, needs, neidigh, neitz, neitzke, nematodes, nemetz, nemitz, nendick, nets, netz, newedge, newmont's, newt's, newts, niedzwiecki, nieto's, nietzsche, nimitz, nimtz, nineties, nineties', ninety's, ninths, nitka, nitsa, nitsch, nitsche, nitschke, nitz, nitza, nitza's, nitze, nitzsche, nodes, nods, nomad's, nomadic, nomads, nominates, nontoxic, nonwhites, notch, notches, note's, notes, notice, notices, notis, nots, nottage, notz, nowadays, nudes, nudge, nudges, nut's, nuts