No, it will only work for a Drummer track. It's not doing audio to midi conversion, it's exploiting the fact that under the hood the Drummer tracks are really midi generated, even though GarageBand only presents them as audio.
No, it will only work for a Drummer track. It's not doing audio to midi conversion, it's exploiting the fact that under the hood the Drummer tracks are really midi generated, even though GarageBand only presents them as audio.