Roland KF-90 Manuale Utente

Music files contain information describing the details of a 
musical performance, such as “the C3 key on a keyboard was 
pressed for this amount of time, using this amount of 
force.”By inserting the floppy disk into the disk drive on the 
KF-90, the performance information is sent from the floppy 
disk to the piano, and played faithfully by the piano. This is 
different than a CD, since the music file does not contain a 
recording of the sound itself. This makes it possible to erase 
certain parts, or to change instruments, tempos and keys 
freely, allowing you to use it in many different ways.

Use of the song data supplied with the Data Disk attached to 
this product for any purpose other than private, personal 
enjoyment without the permission of the copyright holder is 
prohibited by law. Additionally, this data must not be 
copied, nor used in a secondary copyrighted work without 
the permission of the copyright holder.

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Roland’s original music file is made specifically for 
practicing the piano. Some follow an instructional 
curriculum, allowing for a complete range of lessons, such as 
“practicing each hand separately” or “listening to only the 
accompaniment.”

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SMFs (Standard MIDI Files) use a standard format for music 
file that was formulated so that files containing music file 
could be widely compatible, regardless of the manufacturer 
of the listening device. An enormous variety of music is 
available, whether it be for listening, for practicing musical 
instruments, for Karaoke, etc.
If you wish to purchase SMF music files, please consult the 

retailer where you purchased your KF-90.

“SMF with Lyrics” refers to SMF (Standard MIDI File) that 

contains the lyrics. When music files carrying the “SMF with 

Lyrics” logo are played back on a compatible device (one 

bearing the same logo), the lyrics will appear in its display. 

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The KF-90 come equipped with GM 2/GS sound generators.

The General MIDI is a set of recommendations which seeks 
to provide a way to go beyond the limitations of proprietary 
designs, and standardize the MIDI capabilities of sound 
generating devices. Sound generating devices and music files 
that meets the General MIDI standard bears the General 
MIDI logo. Music files bearing the General MIDI logo can be 
played back using any General MIDI sound generating unit 
to produce essentially the same musical performance.

The upwardly compatible General MIDI 2 recommendations 
pick up where the original General MIDI left off, offering 
enhanced expressive capabilities, and even greater 
compatibility.
Issues that were not covered by the original General MIDI 
recommendations, such as how sounds are to be edited, and 
how effects should be handled, have now been precisely 
defined. Moreover, the available sounds have been 
expanded. 
General MIDI 2 compliant sound generators are capable of 
reliably playing back music files that carry either the General 
MIDI or General MIDI 2 logo. 
In some cases, the conventional form of General MIDI, which 
does not include the new enhancements, is referred to as 
“General MIDI 1” as a way of distinguishing it from General 
MIDI 2. 

The GS Format is Roland’s set of specifications for 
standardizing the performance of sound generating devices. 
In addition to including support for everything defined by 
the General MIDI, the highly compatible GS Format 
additionally offers an expanded number of sounds, provides 
for the editing of sounds, and spells out many details for a 
wide range of extra features, including effects such as reverb 
and chorus. 
Designed with the future in mind, the GS Format can readily 
include new sounds and support new hardware features 
when they arrive. 
Since it is upwardly compatible with the General MIDI, 
Roland’s GS Format is capable of reliably playing back GM 
Scores equally as well as it performs GS music files (music 
files that have been created with the GS Format in mind).
This product supports both the General MIDI 2 and the GS 
Format, and can be used to play back music data carrying 
either of these logos.