YAMAHA PSR 320 - DEMO songs

Classic Cantabille LK-290 - (DEMO songs) part 2/3

Classic Cantabille LK-290 - (DEMO songs) part 1/3

SK 560 keyboard - DEMO songs

MC GREY BK - 6100 - sounds and styles

MC GREY BK - 6100 - DEMO songs

Concertmate 970 - 20 JUKEBOX songs

YAMAHA PSR 4600 - DEMO songs

Mc Crypt MC-37 MC 37 - DEMO songs - part 1/2

Mc Crypt MC-37 MC 37 - DEMO songs - part 2/2

Keyboard MC-6961 - DEMO songs

How to open and repair key and power supply plug on CASIO MT-520

CASIO CT 410V - tones and styles thru FILTER

CASIO CA-110 - DEMO song

Millenium HD-100 - playing patterns on module

KORG PA 50 - DEMO songs

CRUMAR compac piano Crucianelli 1973 - open and repair pots and contacts

KAWAI X30 - sounds, styles, AdLib

KAWAI X30 - DEMO song

YAMAHA DX 21 - Repair contacts and keys

CASIO CZ 230S - testing sounds, rhythms

YAMAHA PSR E-343 - DEMO songs - Part 1/3

YAMAHA PSR E-343 - DEMO songs - Part 2/3

YAMAHA PSR E-343 - DEMO songs - Part 3/3

How to open and fix not working key - Gold Star GEK-S520

YAMAHA PSR e343 - ritmovi narodne muzike - Serbian folks music USER rhythms (if someone is asking?)

Yamaha PSR-290, PSR 290 - (DEMO songs) - part 3/3

Gold Star GEK-S520 - DEMO songs

Yamaha PSR-290, PSR 290 - (DEMO songs) - part 2/3

Yamaha PSR-290, PSR 290 - (DEMO songs) - part 1/3