1. Music symbols: ? ‖ § ∮

2. Name: rising (#), falling (b), double rising (×), double falling (bb), ( ⌒), tuplet (.), dotted (∠), crescendo (||), double vertical line (||:), (:||), bar repeat mark ∮, diacritical mark, pianissimo (mp ), medium strong (mf), ppp, pp, mp, p are enhanced in turn, f, mf, ff, fff are weakened in turn.

1. Sharp sign (#): Raise the basic tone level by a semitone.

2. Flat mark (b): Lower the basic tone level by a semitone.

3. Re-rising mark (×): Raise the basic pitch level by one whole tone.

4. Double flat mark (bb): lower the basic tone level by one whole tone.

5. Restore mark (ヰ): restore the sound that has been raised or lowered.

Extended information

1. Musical notation (English name: Musical notation), including head, stem and tail. The function of notes is to record the progression of sounds of different lengths and to express the different characteristics of sounds.

2. Note classification

1. Whole note: a hollow white note without stems and tails. Represented as a hollow elliptical note head.

2. Half note: a white note with a stem and no tail. The duration is 1/2 of a whole note and is often used at the end of a song.

3. Quarter note: a black note with a stem and no tail. Represented as a solid elliptical note plus an untailed stem.

4. Eighth note: a black note with a stem and a tail. Represented as a solid ellipse head plus a flag-shaped tail stem.

5. Sixteenth note: a black note with a stem and 2 tails. Represented as a solid elliptical note plus a stem with two flag-shaped symbols.

6. Thirty-second note: a black note with a stem and 3 tails. It is represented by a solid oval note head and a stem with three flag-like tails.

7. Sixty-fourth note: a black note with 4 stems and tails. It is represented by a solid oval note head and a stem with four flag-like tails.

Reference: Baidu Encyclopedia-Music Symbols