Yamaha MP-1 – The Keyboard with a Music Printer

From Keen On Keys.

The MP-1 is the world’s first and only portable keyboard with a music printer. It features 44 mid-sized keys, 8 note polyphony, 10 voices with sustain, 10 rhythms with variation, duet function, transposer and chord and melody memory. It sounds exactly the same as the PC-100 and PS-400 and was also released in 1982.

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0:00 Overview
4:34 A Look Inside
7:01 Repair
9:39 Cleaning
11:32 Ballpoint Pens
13:00 Print and Play
14:57 Memory Print
17:29 Paper Change
18:48 16th Notes
20:12 Sensitivity
21:33 Reproducing
23:09 Conclusion

New brass gears:

New pens:
(They also sell the thermal paper I used in the video)

More information about repair and refilling the pens can be found here:

Magazine scans by: http://www.muzines.co.uk/

Listen to some tracks on Soundcloud: