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vgmtrans
VGMTrans - a tool to convert proprietary, sequenced videogame music to industry-standard formats
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The two best options, in my experience, would be to use either GBA Mus Riper (yes, it is actually misspelled), or VGMTrans. Both should be able to take a GBA rom as input, and give you both midis, and a matching soundfont to go along with them. Then you can use your music editor of choice to load up said midi, and do whatever you want with it.
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