An Accordion is found in the Rock Island Prison during the Rocking Out quest. It is hidden among the rubble to the north of the player's prison cell. The accordion must be slashed open using the smashed bottle to create the accordion (hole). The pipe must then be used on it to create the accordion (pipe). The holes around the pipe must be sealed up with an inky paper to create the vacuum pump. The pipe in the vacuum pump can then be filled in with a seagull to create the vacuum pump and gull.
When played, the following message appears: "The accordion makes a sad clunking noise. No wonder it was thrown away."
This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!