I searched a lot in the internet how can i play my own song, when a sequencer song is already playing. but i didn't find the solution! The keyboard is not working when a sequencer1/2 is playing

do you know what I mean ?

i need to create a first custom song (style + song), and play it as a background (like a style), so i can play my own song when this custom song is running.
Hope i can find an answer describing for me how to do that.
Thanks in advance.