At the end of the day you’re a musician first and a marketer second. It’s always okay to bring in some outside help, but knowing the most common marketing mistakes musicians make will help you set yourself above the crowd by embracing the new opportunities available to you for promoting your music.
The projects I’m involved in all leave room for people to put their personal touch on things. What I express might change depending on the project’s conditions and the song but the freedom of expression is always there. There’s a visceral connection to different dynamic/intensity levels that I enjoy.