iPad Music uses 1.54 GB for documents & Data, only one 6.2 MB song

Hello there LexMex,

I understand you're curious about your iPad storage usage, so let's see if the following information is able to help with what you're seeing.

First, let's be sure that you're up to date with the latest iPadOS version to be sure the reported storage is accurate. If you see that an update is available, let's be certain that you have a recent backup of information. If you need assistance with either of these steps, check out the following resources:

How to back up your iPhone, iPad, and iPod touch

Update your iPhone, iPad, or iPod touch

Once you confirm that you're up to date with the latest iPadOS version, let's check to see if this may be related to music being synced but not downloaded to your iPad. For help with this, check to see if you have "Sync Library" enabled on your iPad. In addition to this, check to see if your music is downloaded or just added to your Music library. There will be a second resource that covers downloading music as well below.

Turn on Sync Library with Apple Music

Add and download music from Apple Music

If you continue to see a discrepancy in the reported storage, Contact Apple Support to look into this in more detail.

Have a great day!