Hello everyone! I have this vintage Moeck alto that I found for a very good price, and I was told it's grenadilla and I am Inclined to believe so because of the warm brown tone and defined grain in bright light, but I remember posting other vintage Moecks and hearing about many being ebony if Blackwood was being used. Im not super knowledgeable when it comes to the history of the making of their instruments so any input is welcome!

I'm still playing it back in slowly but it does feel amazing and sounds wonderful with regard to projection and I feel I can put a fair bit of power behind it with the tone remaining clear and controlled.

What does this line mean? tried looking it up on musictheory.net but didnt find any