How would I write this sentence in an active voice:

"Blue Suede Shoes" was sung by Elvis Presley

Is this correct:
Elvis sang " Blue Suede Shoes".

Yes, that's correct.

Where are my blue suede shoes

To rewrite the sentence in the active voice, you can make Elvis the subject of the sentence. Here's one way to write it:

"Elvis Presley sang 'Blue Suede Shoes'."

This sentence is correct and written in the active voice.