Misc: what's the longest river in western europe?

Questions

- Same as concord.?

(It.) Abbreviation of basso continuo. Same as figured bass.?

- The lower type of female voice having a range from F below middle C to G above the treble clef.?

- Adjective from counterpoint.?

- String(s) - In piano playing, una corda (one string) indicates the use of the soft (left) pedal. The term tre corde (three strings) cancels this, indicating the release of the soft pedal.?