Add a 4-bar POP ACCORDION track in the following composition:
PS T4Q4 GMPOP KMBb BM70 CMFmQBbmQFQC#6 BL4 IL44Q0Q37Q82Q29Q22Q7Q0Q22Q0 TS INST44 DN0 BS TD0X083 NO65 TD15X917 NOF65 BE BS NO65 TD0X167 NOF65 BE TE TS INST22 DN0 BS BE TE TS INST0 DN0 BS BE BS BE BS BE BS BE TE TS INST0 DN0 BS BE TE PE
TS INST22 DN2 BS TD3X917 NO77 TD7X917 NO75 TD0X25 NOF77 TD0X333 NO73 TD0X458 NOF75 TD0X333 NO70 TD0X542 NOF73 TD0X958 NOF70 TD1X167 NO70 TD0X125 NOF70 BE BS NO70 TD3X833 NOF70 TD0X042 NO70 TD0X958 NO68 TD0X375 NOF70 TD0X792 NO65 TD0X167 NOF68 TD1X333 NOF65 TD0X625 NO65 TD3X75 NOF65 TD0X042 NO67 TD1X75 NO65 TD0X25 NOF67 TD0X875 NOF65 TD1X125 NO70 TD0X083 NOF70 BE BS NO70 TD6X208 NOF70 TD0X083 NO70 TD5X583 NOF70 TD0X083 NO70 TD4X042 NOF70 BE BS NO70 TD1X708 NOF70 NO65 TD1X917 NOF65 TD0X042 NO65 TD3X833 NOF65 TD0X125 NO65 TD4X292 NO67 TD0X25 NOF65 TD1X708 NOF67 NO65 TD1X167 NOF65 BE TE