Hello

In my opinion & experience I would preffer have just a Melody Echo FX rather than the full Instrumental Echo FX.

This way we can:
- switch smoothly the melodies between the present song & the incoming song.
- Instrumental Echo FX could still be achieved by the combination of Melody Echo FX + + Bass Stem + Drums Echo FX.

With this change we don't lose any feature but we include a new one.

Thank you.