A linen canvas is the best surface ;)
No, tree bark would be a real or actual texture, because it looks the way it feels.
Donatello’s sculpture of David was made out of bronze and stood 5 feet 2 ½ inchestall. Donatello’s version of David shows little muscle structure. It seems as though this versionof David has a more girlish figure. For example, the way David is standing with hips slightlytilted and a curled wrist placed on his hip, appears to me to be more of a ladies pose. A couplemore examples are the way he placed the curly looking hair, the leaves around the hat that iscurled upward and the forward position of one of his legs. This sculpture, to me, does not depict<span>strength.</span>
First one: It would be on Sol
Second one: No. It would be on La. The note is B. And is a Bflat
(I don't know Bass Clef as well. I play Alto Sax, which uses Treble Clef. So please forgive me)
Third one: It would be A flat
Fourth one: It would be C then C flat
(Again, I don't know Bass Clef that well, so don't count on my answers)