Add a 4-bar POP GUNSHOT track in the following composition:
PS T4Q4 GMPOP KMG BM90 CMF#QBmQGQEmQA BL4 IL17Q50Q0Q38Q0Q0 TS INST0 DN0 BS BE TE TS INST17 DN4 BS NO85 NO86 TD1X0 NOF85 NOF86 NO86 TD1X0 NOF86 NO85 TD1X0 NOF85 NO85 TD1X0 NOF85 NO85 TD1X0 NOF85 TD1X0 NO85 TD1X0 NOF85 NO85 NO85 TD1X0 NOF85 NOF85 NO97 TD1X0 NOF97 NO85 TD1X0 NOF85 NO97 NO97 NO85 TD1X0 NOF97 NOF97 NOF85 NO97 TD1X0 NOF97 NO97 TD1X0 NOF97 NO97 TD1X0 NOF97 NO97 TD1X0 NOF97 BE BS NO90 NO97 TD1X0 NOF90 NOF97 NO97 TD1X0 NOF97 NO90 TD1X0 NOF90 NO90 TD1X0 NOF90 NO90 TD1X0 NOF90 TD1X0 NO90 TD1X0 NOF90 NO90 NO90 TD1X0 NOF90 NOF90 NO98 TD1X0 NOF98 NO90 TD1X0 NOF90 NO98 NO98 NO90 TD1X0 NOF98 NOF98 NOF90 NO98 TD1X0 NOF98 NO98 TD1X0 NOF98 NO98 TD1X0 NOF98 NO98 TD1X0 NOF98 BE BS NO95 NO98 TD1X0 NOF95 NOF98 NO98 TD1X0 NOF98 NO95 TD1X0 NOF95 NO95 TD1X0 NOF95 NO95 TD1X0 NOF95 TD1X0 NO95 TD1X0 NOF95 NO95 NO95 TD1X0 NOF95 NOF95 NO88 TD1X0 NOF88 NO95 TD1X0 NOF95 NO88 NO88 NO95 TD1X0 NOF88 NOF88 NOF95 NO88 TD1X0 NOF88 NO89 TD1X0 NOF89 TD1X0 NO89 NO89 TD1X0 NOF89 NOF89 NO89 TD1X0 NOF89 BE BS NO90 TD1X0 NOF90 TD1X0 NO90 TD1X0 NOF90 NO90 TD1X0 NOF90 NO90 TD1X0 NOF90 TD1X0 NO90 TD1X0 NOF90 NO90 NO90 TD1X0 NOF90 NOF90 NO98 TD1X0 NOF98 NO90 TD1X0 NOF90 NO98 NO98 NO90 TD1X0 NOF98 NOF98 NOF90 NO98 TD1X0 NOF98 NO98 TD1X0 NOF98 NO98 TD1X0 NOF98 NO98 TD1X0 NOF98 BE TE TS INST50 DN2 BS NO68 NO73 NO70 NO68 NO70 NO61 TD8X0 NOF68 NOF68 NO66 NO66 TD8X0 NOF73 NOF70 NOF70 NOF61 NOF66 NOF66 BE BS NO66 NO71 NO62 TD8X0 NOF66 NO67 TD8X0 NOF71 NOF62 NOF67 BE BS NO71 NO64 NO67 TD8X0 NOF71 NOF67 NO69 NO73 TD4X0 NOF69 NO70 TD4X0 NOF64 NOF73 NOF70 BE BS NO66 NO71 NO62 TD8X0 NOF66 NO67 TD8X0 NOF71 NOF62 NOF67 BE TE TS INST0 DN0 BS BE BS BE BS BE BS BE TE PE
TS INST0 DN1 BS BE BS NO62 TD2X0 NOF62 NO71 TD2X0 NOF71 NO71 TD2X0 NOF71 NO69 TD1X0 NOF69 NO71 TD7X0 NOF71 NO74 TD2X0 NOF74 BE BS NO64 TD8X0 NOF64 BE BS NO59 TD2X0 NOF59 NO71 TD2X0 NOF71 NO71 TD2X0 NOF71 NO69 TD1X0 NOF69 NO71 TD7X0 NOF71 NO74 TD2X0 NOF74 BE TE