2 Midi files in one project - csound

Question

I'm trying to play two separate midi files in one project. Bronson2 I have
working fine. How should I approach bass.mid to get it to work alongside the
other file. I have a feeling it's something about Midi numbers however I'm new to csound and unsure. I've posted the code below. I'm receiving an error message that the midi file won't load however I've made sure it's in the project file. Any help is appreciated, thanks.
<CsoundSynthesizer>
<CsOptions>
-F Bronson2.mid
-F bass.mid
</CsOptions>
<CsInstruments>
ksmps = 10
0dbfs = 1
instr 1
iamp ampmidi 1
ifr cpsmidi
aosc oscil iamp, ifr, 1
afilt lpf18 aosc*.5, 1500, .89, .9
out afilt*.02
endin
instr 5
iamp ampmidi 1
ifr cpsmidi
aosc oscil iamp, ifr, 1
afilt lpf18 aosc*.5, 1500, .89, .9
out afilt*.02
endin
instr 4 ;hihat closed
aamp expon .25, 0.1, .001 ;short fade out...an a-rate
exponantial line, a-rate makes it more accurate.
arand rand aamp ;random noise faded
out arand*.1
endin
instr 2 ;snare
iamp = p4
aenv1 expon iamp, 0.03, 0.01 ;short fade out
a1 oscili aenv1, 147, 1 ;'ring' faded, 147 hz works well for snare
ring.
aamp expon .25, 0.2, .001 ;short fade ut
arand rand aamp ;random noise faded
out a1+arand*.2 ;mix
endin
instr 3; kick
ipitch = p4
k1 expon ipitch, .2, 50 ;detune...with user-controlled starting point.
aenv expon 1, p3, 0.01 ;fade over note
a1 poscil aenv, k1, 1 ;pitched tone, faded out
out a1*.4*.2 ;scale down volume
endin
</CsInstruments>
<CsScore>
f 0 3600
f1 0 1024 10 1
t 0 120
{16 CNT ;38 seconds long
i4 [0 + 4*$CNT.] 0.25
i4 [0.5 + 4*$CNT.] 0.25
i4 [1 + 4*$CNT.] 0.25
i4 [1.5 + 4*$CNT.] 0.25
i4 [2 + 4*$CNT.] 0.25
i4 [2.5 + 4*$CNT.] 0.25
i4 [3 + 4*$CNT.] 0.25
i4 [3.5 + 4*$CNT.] 0.25
i2 [1 + 4*$CNT.] .25 .45
i2 [3 + 4*$CNT.] .25 .45
i3 [0 + 4*$CNT.] .25 100
i3 [2 + 4*$CNT.] .25 100
i3 [2.5 + 4*$CNT.] .25 100
}
</CsScore>
</CsoundSynthesizer>