UnScramble this Word: r e p r a p s t?

Questions

- A 20th century concept of playing an adjacent group of notes on a piano simultaneously by applying the forearm, fist or piece of wood to the keyboard.?

(Fr.), lclangfarbe (Ger.) - This is the characteristic quality of an instrument's or voice's tone. In basic terms it is the quality which distinguishes a note performed on one instrument compared with the same note sounded on an other instrument or sung by a voice The tone colour of an instrument corresponds with the harmonics of that instrument.?

- Same as symphonic poem.?

- An ordered melodic theme in serial or 12-tone music.?

- The first degree of the scale or a triad built on that degree.?