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. This Rainforest S African mahogany 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.