The Rainforest S Concert Acoustic-Electric Guitar is part of Breedlove's ECO Collection designed to be both environmentally friendly and to also maximize acoustic guitar sound. The Rainforest Concert features mahogany body for a warm, immediate sound with a strong midrange emphasis and a ringing sustain. The popular concert body shape, favored by players for being well-balanced, compact and comfortable to play while offering all the qualities of a great sounding guitar, generates a wonderfully articulate range of tone with an ample low end that is never boomy, but always present.