Abstract: A musical instrument having a body defining a substantially hollow volume, a neck coupled to the body, at least one string tensioned between the body and the neck, and a sound module positioned in the body and including a speaker having a front surface communicating directly with the hollow volume. In one embodiment, the speaker is part of a sound module that is positioned within the body of the guitar. Preferably, the sound module further includes an amplifier, a power switch, a volume control, an audio input (e.g., a wireless audio input or an audio input jack), and a battery compartment. A second aspect of the present invention is that the speakers do not face in a direction that is perpendicular to the plane defined by the soundboard. Rather, they face in a direction that is at some other angle, such as angled at least about thirty degrees from being perpendicular to the plane.