Add a 4-bar POP STRING ENSEMBLE 2 track in the following composition:
PS T4Q4 GMPOP KMG BM75 CMFQEbmaj7QFm6QCQG BL4 IL33Q22Q24Q0Q102Q27Q25Q48Q35Q50 TS INST48 DN0 BS BE TE TS INST102 DN0 BS BE BS BE BS BE BS NO72 NO84 TD16X0 NOF72 NOF84 BE TE TS INST35 DN0 BS NO43 TD3X967 NOF43 TD0X033 NO41 TD3X967 NOF41 TD0X033 NO39 TD3X967 NOF39 TD0X033 NO38 TD3X967 NOF38 BE BS NO32 TD5X967 NOF32 TD0X033 NO32 TD9X967 NOF32 BE BS NO32 TD5X967 NOF32 TD0X033 NO32 TD9X967 NOF32 BE BS NO31 TD5X967 NOF31 TD0X033 NO38 TD9X967 NOF38 BE TE TS INST25 DN0 BS BE BS BE BS BE BS BE TE PE
TS INST50 DN1 BS BE BS NO62 NO60 NO56 NO53 TD16X0 NOF62 NOF60 NOF56 NOF53 BE BS NO62 NO60 NO56 NO53 TD16X0 NOF62 NOF60 NOF56 NOF53 BE BS NO60 NO55 NO50 TD16X0 NOF60 NOF55 NOF50 BE TE PE