Anvil Studio
Anvil Studio is a shareware MIDI editor developed and published by Willow Software. It has been around for many years and still sees regular updates. It is a full-featured MIDI editor giving you the ability to create complex MIDI files and view songs in various ways.
Personal
I used to use Anvil Studio as my primary MIDI sequencer, however, its constrictive interface led me to seek out other programs, and now I prefer LMMS.
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