There are many types of collectors in the world from stamp collectors to those that prefer coins.
But for the late Frank Holland his passion for collecting self-playing musical instruments turned into something bigger, and today the Musical Museum in Brentford holds the world's largest collection of historic musical rolls.
It is one of London's hidden gems and has built up quite a collection over the past five decades.
Here you can take a look back at some of his prized possessions from the smallest of clockwork boxes to the Mighty Wurlitzer organ.
The musical journey started more than 50 years ago when Frank became fascinated by reproducing pianos or pianolas- a self-playing piano - which led to his first purchase and the beginning of his own private collection.
Mesmerised by the clever machinery his collection of instruments began and were housed in an friend's old billiards room before being moved to the former St George's Church in Brentford in 1963.
The instruments were moved to what was meant to be its temporary home but stayed for around four decades.
It was here it took on the name of the Musical Museum.
As word spread more musical instruments were bought including the greatest instrument of them all - a 'Mighty Wurlitzer' organ, which has since been restored.
Others among the self-playing instruments and music rolls include orchestrions, orchestrelles, residence organs and self-playing violins.
Over the last 40 years the museum's collection has grown and is internationally renowned for holding some of most exquisite pieces of instruments in the world.
Sadly, Frank born in 1910 in Gravesend, Kent, died in 1989 leaving behind musical melodies of yesteryear.
The move to its permanent home on the High Street in Brentford was made in 2008.
The Musical Museum is open Tuesdays, and Friday to Sunday, and Bank Holidays from 11am to 5pm.
Entry is £10 adults, £7.50 concessions and £4 children aged five to 16.
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