The story of the Mellotron begins in early 1962 when an American
called Bill Fransen contacted a Midlands based engineering company
called Bradmatic Ltd (run by three
brothers Les, Frank and Norman Bradley) to see if they could produce
seventy matched tape heads. The Bradleys went to see why someone
would want all these tape heads
and were shown an American keyboard instrument that had been made
by Harry Chamberlin that replayed prerecorded tapes, one per key,
of real instruments. It was the
'Chamberlin'.

Norman, Frank and Les Bradley (picture courtesy of John Bradley)
The Chamberlin, described as "a sideboard with keys on",
had many shortcomings but the Bradleys were "staggered"
by the concept of a tape replay keyboard. The
Chamberlin was also very difficult to produce in large numbers
so the Bradleys refined and added their own innovations to the
design and produced a new instrument that was
named the Mellotron Mark I (The name came from MELOdy and elecTRONics
but was finally spelt with two l's).
By the end of 1962 financial backing was in place from some
quite well known show business names such as David Nixon (TV magician)
and Eric Robinson (Big Band
leader, and supplier of many of the musicians who were recorded
onto the tapes) and the factory in Streetly, Birmingham was opened.
The first Mellotron produced was the Mark I and was designed as a home instrument along the lines of an electronic organ. 55 were made in 1963.
The Mark I was quickly followed in 1964 by the improved Mark
II. Most Mark I's were converted to Mark II spec as well. Also
having two 35 note (G - F) keyboards side by
side it looked very similar. About 250 were made between 1964
and 1968.
An offshoot of the Mark II was produced for the BBC that was
called the FX Console. It was a modified Mark II used for adding
sound effects for radio and TV programmes
(including Doctor Who). About 60 were made between 1965 and 1970.
There was also an offshoot of the M400 used for the same purpose.
The M300 followed the Mark II and was the only production model
that used 1/4" tapes. Although Mark I and Mark II Mellotrons
had already been used on quite a few albums
in the late 60's this was still produced as an alternative to
the home organ. About 60 were produced between 1968 and 1970.
The M300 was followed by the most well known and successful
model, the M400. By now Mellotronics had realised that the main
customers for the instruments were rock
bands so this was the most portable and oft-gigged version. About
2000 M400's were produced between 1970 and 1986. This includes
all Novatrons and the one-off teak
flavoured batch of 100 produced by EMI in the mid seventies.

Inside the original Streetly Electronics factory - more Mellotron mass production (picture courtesy of John Bradley)
A variation on the 400 was the Mark V that was basically two
400's side by side with a common capstan but only 30 were produced
before disaster struck and the parent company Mellotronics went
bust.
Two sad facts here, firstly Streetly who were actually producing
the instruments were still financially sound and secondly, they
were
no longer allowed to call the instrument they produced 'Mellotrons'.
The reason for this is that the registered name 'Mellotron' was
sold by accident along with the other assets of the company 'Mellotronics'.
The M400 was quickly re-christened the 'Novatron' and
was produced until the sad (but temporary) demise of Streetly
Electronics in 1986.
Although originally designed as a 'home entertainment' keyboard
by the mid sixties the Mellotron was starting to appear on
contemporary rock / pop records. A few of the many users of note
have included The Beatles, Yes (Rick Wakeman burnt his!),
Genesis, Tangerine Dream, King Crimson, Moody Blues, Manfred Mann,
Strawbs, Traffic, Led Zeppelin, Rolling Stones, Gentle
Giant, Jethro Tull, Larry Fast (says he still has it), J M Jarre
(recently seen on German TV with his M400 and is still touring
with
them), Barclay James Harvest, England, Pallas, Peter Sellers and
(allegedly) Princess Margaret!
For most people the Mellotron finally faded into oblivion in
the eighties, replaced by affordable solid-state samplers and
sample replay
keyboards. Mellotrons ended up being scrapped off or were left
abandoned in squalid conditions in damp cellars and dusty
storerooms.
However this is not the end of the story as the Mellotron has
recently seen a revival in it's fortunes in recent years. Quite
a few
fashionable people are starting to rediscover it's unique sound
(check out Oasis, Radiohead, Julian Cope and Node to name but
a
few). Sadly this has caused a considerable hike in the price of
a Mellotron here in the UK so expect to pay at least 700 pounds
for an
M400 (probably in dire need of repair) and about 3000 pounds for
one that has been professionally restored by Streetly Electronics
(restarted by John Bradley, Les Bradley's son, who know all there
is to know about Mellotrons).