Abstract: A sliding bass mechanism is disclosed and creates an excellent environment for the left wrist, hand and fingers to manipulate the bass and chord buttons of an accordion. This sliding bass makes possible the delivery of accurate rhythmic and harmonious pulse. The accordion sliding bass of this invention presents an opportunity to allow the left wrist, hand and fingers the freedom to reach a new degree of speed, accuracy and force, while at the same time being able to push and pull the accordion in a very smooth manner.