A quick-release tremolo lock device for installation into a tremolo recess, and for mounting to a movable bridge or a tremolo block of a stringed instrument such as a guitar. The tremolo lock device includes a spring mount that is adapted to be fixedly attached to at least one wall of the tremolo recess and configured to capture an end of at least one tremolo spring. A slide key is also incorporated into the device, which is connected to the spring mount about a proximate portion of the slide key. The device also includes an adjustable quick release slide receiver that is adapted to receive and to releasably capture a distal portion of the slide key to fix the position of the receiver relative to the slide key. The device further includes a tail piece joined to the quick release slide receiver and configured to be mounted in a spring hole of the tremolo block.