Byzantine Empire expanded and collapsed much like an accordion
An accordion file is a file for storing documents which opens by expanding, in the same manner as an accordion.
An accordion player - also known as an accordionist - is a musician who plays the accordion.
Gabbanelli accordions are available to purchase direct from the Gabbanelli manufacturer online. Some places such as eBay may offer second hand products.
Accordion music can be found at any mass music merchandiser such as Daddy's Junkie Music. Accordion music can also be found online on most accordion manufacturers websites.