useless trivia: What Word Means: A Webbed Bar?

Questions

- Instruments that produce different notes than those written in concert pitch.?

(Ger.) - Sad.?

- (1) Treble clef. G clef on the second line; (2) Prefix to an instrument of high pitch within a family (e.g. treble recorder).?

(It.) - Indication to pianists that the left (soft) pedal is to be released.?

(Fr.) - Trill.?