I recently updated my iPod to ios.6.1.6 but lost all my music. Is this retrievable?

Hello upsetatloss,

If you were using Apple Music, Turn on Sync Library [formerly iCloud Music Library] https://support.apple.com/HT204926

If you were not, sync your iPad to iTunes or the Music app on your computer. Sync your iPhone, iPad, or iPod using your computer - https://support.apple.com/HT201253