Lyrics: Puts a song in this heart of mine/Puts a smile on my face every time?

Questions

- (1) The interval consisting of two semitones (e.g. C to D); (2) The quality of sound of an instrument.?

- 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.?