Is it possible to get access to files in an old/inactive S3 bucket?

Many moons ago I was in a band, and we had a website with our songs stored in Amazon AWS. I recently found that our site was archived on the Way Back Machine. But unfortunately, the audio was in S3 and those URLs don't work.

    
<Code>NoSuchBucket</Code>
<Message>The specified bucket does not exist</Message>

  

WBM did not archive these URLs (understandably).

I no longer have any AWS account because Amazon is poopy.

Are these files lost to time, or is there some magic way to retrieve them?