The largest Wurlitzer organ originally built (in terms of pipes), was the four-manual / 58-rank (set of pipes) instrument at Radio City Music Hall in New York City. The Music Hall instrument is actually a concert instrument, capable of playing a classical as well as non-classical repertoire. It, along with the organ at the Paramount Theatre in Denver Colorado are the only Wurlitzer installations still in use that have dual consoles. While Denver's is the typical "master-slave" system, Radio City is the only surviving original Wurlitzer installation to have two identical and completely independent consoles playing the same organ. Both instruments have been substantially altered in more recent years.