Misc: how long is a full-seized billiards table??

Questions

(Ger.) - Lightly.?

(Ger.) - Soft, gentle. Leiser, softer.?

(Ger.) - Leading motif. This is a recurring theme symbolising a character, emotion or object and was first used by H. Von Wolzogen in a discussion of Wagner's The Ring. ?

- This term described a short, keyboard piece or a set of short pieces in the 17th and 18th centuries.?

(It., 'booklet') - The text of an opera or oratorio.?