The Orchestrion is a music player that can be found in the inn, and can be added to player housing. This page explains how to unlock Orchestrions and where to find them.
How to Unlock the Orchestrion
You can unlock the Orchestrion (not to be confused with "orchestration") by using an Orchestrion Roll. For example, you can buy them from the market board, or from vendors, such as Bango Zango near the Limsa Lominsa Aetheryte Plaza, from Maisenta near the Gridania Aetheryte Plaza, and from Roarich in the Ruby Road Exchange, which is southeast of the Ul'dah Aetheryte Plaza, for example.
Examples of other sources of Orchestrion Rolls include quest rewards, achievement rewards, and crafted items.
Where to Find Orchestrions
You can play the Orchestrion Rolls you have collected by using an Orchestrion. You can find an Orchestrion in inn rooms (unlocked via the level 9 Main Scenario Quests Way Down in the Hole, Just Deserts, and Spirithold Broken).
Orchestrions can also be crafted and added to player housing. An Orchestrion can be crafted by level 60 Carpenters who have purchased Master Carpenter IV from a Scrip Exchange in any city (as well as from other vendors). A Table Orchestrion can be crafted by level 60 Goldsmiths who have purchased Master Goldsmith IV from a Scrip Exchange in any city (as well as from other vendors).