VTG 1991 M&M's Heart Shaped Box red pink cupid valentine's day music Mars, Inc

Mars, Inc. M&M's Heart Shaped Music Box Vintage 1991 great vintage condition; & gently cleaned for you. i wanted to replace the battery, but the screws are proprietary and not meant to be removed. it still plays music, although, the battery is clearly faded. i am not familiar with the tune. a red plastic heart shaped box fully removable lid pink M&M character holding a white bow with quiver and heart-shaped arrows; cupid when the M&M is lifted upright, music plays approximate dimensions (see pics): box 6.5" width x 6.5" length x 2" height M&M height 2.5" great Valentine's Day gift for a Y2K vintage 90s fan :) questions? please ask!