R7 - May Cause Fire (EDM t-shirt)

This is what a business in United States was looking for in their t-shirt design

We are an EDM duo called Rubicon 7 that play and produce high-energy electro house music. We want a t-shirt design that uses "R7" and the phrase "may cause fire" along with the symbol in the attached file. The symbol is a circle with flames on top...but we want line-art headphones added to it in the same style. The overall icon can be updated/modernized, but still needs to be recognizable as a play on the original icon.
The R7 should be prominent in the design. Be creative with the "R7" portion of the design. Should be something that can stand on it's own, perhaps a stylized font instead of Arial or Helvetica.

No limit on number of colors. Read more