Buhari new song
I think there may be some confusion here!
President Muhammadu Buhari is a politician, not a musician, so he doesn't have a new song. He is the current President of Nigeria, and his focus is on governance and leadership, not music.
If you're looking for Nigerian music, there are many talented artists and musicians in the country who create great music. You can search for popular Nigerian artists like Wizkid, Davido, Tiwa Savage, and Burna Boy, among many others.
Let me know if you need help with anything else!