Where does the math live? Sound is vibration, and music is vibration, but music is also a beautiful rendition and display of mathematics. There is geometry in the humming of an instruments’ strings, there is music in the spacing of notes, even a bird’s melody; math lives in music.
Math, in many ways, is making music: From the basics of rhythm to the ratios among notes, chords and melodies, to even the ways in which particular pitches vibrate at specific frequencies, perhaps a the low pitch of a tuba, vibrating some 261 times / second or perhaps the chipper of a dolphin’s pitch, vibrating at 21000 times per second; math can definitely be found in sound and music, and most importantly, children can engage with music as a way to develop their conceptual understanding of numbers, as well as their number sense.
For younger grades, using play as a means for developing mathematical awareness, through both song and movement is one way to engage students with Mathematical concepts more authentically and meaningfully.

