OK, that MIDI file is a combination of all tracks. It contains data on the following channels (zero based)
Track 0 - Candlelight Carol on Channel 0
Track 1 - Bass on Channel 1
Track 2 - Drums on Channel 9
Track 3 - Piano on Channel 2
Track 4 - Guitar on Channel 6

It was possibly saved as a MIDI Type 0 file, where all channels are combined. Can you recall how you saved the MIDI data, was it Type 0 or Type 1 ?

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