Supercharged symphony: The 2015 Roush Mustang sings a sweet song

A band won’t go far without a good singer, because rarely does good musicianship make up for a terrible voice.

It’s good to know that the 2015 Roush Mustang won’t have that problem.

Exactly what lies under the pony car’s new, bulbous hood is still a mystery, but the car definitely makes a great noise. The American tuner released a video of the car’s exhaust on Sunday, and the sinister Roush does not disappoint.

The 2015 Mustang will come in four different stages of performance, and Roush has released details on three of them.

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The entry-level RS version includes several aesthetic upgrades and a distinct blue stripe along the doors, but the 3.7-liter V6 base engine holds steady at 300 hp. The revised, elongated front fascia that debuts on the RS will be featured throughout the Roush line, as will the optional 20-inch Quicksilver wheels.

Like the RS, the Stage 1 rendition of the 2.3-liter EcoBoost comes with an array of splitters, spoilers, and vents, but it’s also equipped with a quad-tipped Roush exhaust system as a core component. The Stage 1 wears a white stripe along its sides.

The final stage that Roush has detailed is the Stage 2, which uses the 435-horsepower, 5.0-liter V8-powered GT as a starting point. Wearing a bright red stripe between the standard 20’’ wheels, the Stage 2 is fitted with the same upgrades as the cheaper models, but there are still no major performance gains over the stock car.

That will all change with the Stage 3. Although the kit is still shrouded in mystery, we know Roush will add a supercharger system to the 5.0-liter Coyote V8. Power output is still unconfirmed, but rumors are it will top the 600 hp mark.

As you can see in the video, the Mustang in question is not a fully-modded Roush unit, simply a Mustang GT with Roush’s axle-back exhaust system. Higher stages will undoubtedly sound even sweeter, especially those with a whining supercharger singing backup.