So nice if you to let us know at the start, it only makes previous answers useless.
Also mixing addressable LED strips of this type with the WS2812 controller, will not work reliably because when the LEDs are being fed their data the interrupts are turned off which means you could miss incoming MIDI bytes making the whole thing not work.
The only soloution I see is to use the sort of addressable LED strip that needs two outputs, data and clock and then write your own library that does not disable the interrupts when sending the data. The data write process for this types is interruptible. These LEDs are sometimes called dot star.
yes i need two outputs. i understand you now. Can I convert data pin to "data pin and clock pin"?