How to modify this circuit in order to increase output voltage and increase reliability. Is it possible to connect an AUX cable input into the Control voltage (pin 5) of the 555 timer in order to create musical arcs, if so how to isolate and protect the music player.

AI: Could you provide a schematic or detailed description of your current circuit setup with the 555 timer?
The flyback transformer is from an old CRT TV, the primary winding on the ferrite core is of 12 turns
AI: What is the desired output voltage level you are aiming to achieve with this modification?
50KV or higher

AI: Could you provide a schematic or detailed description of your current circuit setup with the 555 timer?
The flyback transformer is from an old CRT TV, the primary winding on the ferrite core is of 12 turns
AI: What is the desired output voltage level you are aiming to achieve with this modification?
50KV or higher