Illumishade (Eluveitie, etc.) have joined forces with Adrienne Cowan (Seven Spires) for a new song titled “Heatwave.” You can find a video for that track below: Vocalist Fabienne Erni commented: “Adrienne’s versatility never ceases to amaze me. Her powerful screams, expressive clean vocals, and unique artistic voice made this collaboration something truly special. We felt…