What were the first musical instruments back in history?

A type of flute

there is only one possible answer to this. Mankinds ability to generate a audible acoustical vibration and control its pitch and tone there by causing a measurable stable sound or note. Our voices...

I am not sure but music and beats have been around since the beginning of time. Maybe people back then used natural resources to create a musical sound and or beat.

No one knows the answer to this question except that we can be reasonably sure that early man would have used plant material like reeds growing near water to make crude flutes or whistles. It is also...