Activate mp3 speaker bluetooth playback

[dividexzero]

I have acquired the ESP32 with the idea of activating the sound reproduction on a bluetooth device which already contains the sound files. In many web sites there are examples but they are based on playing a file that are in ESP32.
In my case what I need is to link the ESP32 with a Bluetooth Speaker and that the ESP32 works like a remote control, play a sound track, move on to the next one, etc. But not by infrared, but send the instructions directly by Bluetooth.
Does anyone in the community have any idea how to do it?
Thanks.

[FreddyVictor]

Does the maufacturer of the Bluetooth Speaker mention anything in their sales literature that it can do this ?
It may be a good start to say which one you actually have

I doubt there's an agreed communication protocol for this, so it needs someone to have a working setup and then listen-in on the communications and go from there

Just my thoughts ....

[dividexzero]

Thank you so much for the quick anwser:
I do not really have documentation from the Bluetooth Speaker Manufacturer.
The other options that I have been trying to use is a sound found in a streaming web, I have found some libraries that allow it, but what I do not achieve is that the ESP32 connects with the Bluetooth Speaker to use it as Sound Output, you know something about?
Thanks