Add a 4-bar ELECTRONIC STRING ENSEMBLE 2 track in the following composition:
PS T4Q4 GMELECTRONIC KMC BM125 CMFQCQFQCQG BL4 IL71Q24Q0Q88Q33Q0Q50Q7Q35 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 INST24 DN0 BS BE BS BE BS BE BS BE TE TS INST71 DN1 BS NO62 TD4X0 NOF62 NO62 TD2X0 NOF62 NO64 TD4X0 NOF64 NO66 TD2X0 NO64 TD0X167 NOF66 TD3X833 NOF64 BE BS NO64 TD7X967 NOF64 BE BS TD2X0 NO73 TD1X667 NOF73 TD0X333 NO73 TD1X667 NOF73 TD0X333 NO73 TD1X667 NOF73 TD0X333 NO73 TD3X633 NOF73 TD0X367 NO73 TD1X6 NOF73 TD0X4 NO73 TD2X0 NOF73 BE BS NO73 TD2X0 NOF73 NO74 TD8X0 NOF74 BE TE TS INST0 DN0 BS BE TE PE
TS INST50 DN0 BS BE BS BE BS NO66 TD6X967 NOF66 TD1X033 NO73 TD6X967 NOF73 BE BS NO71 TD7X967 NOF71 TD0X033 NO67 TD6X967 NOF67 BE TE