Add a 4-bar ELECTRONIC HARPSICHORD track in the following composition:
PS T4Q4 GMELECTRONIC KMC BM75 CMFQCQFQCQG BL4 IL24Q88Q33Q71Q35Q0Q7Q0Q50 TS INST24 DN0 BS BE BS BE BS BE BS BE TE TS INST88 DN3 BS NO50 TD2X0 NO57 TD2X0 NOF57 NO62 TD2X0 NOF62 NO66 TD4X0 NOF66 NO62 TD4X0 NOF62 NO57 TD2X0 NOF50 NOF57 BE BS NO57 NO45 TD1X667 NO57 TD0X333 NOF57 NO57 TD1X2 NOF57 TD0X6 NO59 TD0X2 NOF57 NO59 TD1X1 NOF59 TD0X767 NO61 TD0X133 NOF59 NO61 TD1X733 NOF61 TD2X133 NO66 TD0X133 NOF61 NO62 TD1X567 NOF66 TD0X433 NO64 TD1X4 NOF64 TD0X533 NO62 TD0X067 NOF45 NO52 TD2X0 NOF62 NOF62 NOF52 BE BS NO54 TD2X0 NO57 TD2X0 NOF57 NO61 TD2X0 NOF61 NO66 TD4X0 NOF66 NO61 TD4X0 NOF61 NO57 TD2X0 NOF54 NOF57 BE BS NO57 NO43 TD2X0 NOF57 NO55 TD2X0 NOF55 NO59 TD2X0 NOF59 NO67 TD4X0 NOF67 NO59 TD4X0 NOF59 NO55 TD2X0 NOF43 NOF55 BE TE TS INST33 DN0 BS BE TE TS INST0 DN0 BS BE TE PE
TS INST7 DN1 BS NO69 TD1X333 NOF69 TD6X667 NO69 TD1X0 NOF69 TD1X0 NO69 TD1X0 NOF69 BE BS NO69 TD1X333 NOF69 TD6X667 NO69 TD1X0 NOF69 TD1X0 NO69 TD1X0 NOF69 BE BS NO69 TD1X333 NOF69 TD6X667 NO69 TD1X0 NOF69 TD1X0 NO69 TD1X0 NOF69 BE BS NO69 TD1X333 NOF69 TD6X667 NO69 TD1X0 NOF69 TD1X0 NO69 TD1X0 NOF69 BE TE