0 a sign on a stave (= the five lines on which music is written) that shows that the notes are below middle C (= the C near the middle of a piano keyboard) -- 低音谱号
Trombone parts are typically notated in bass clef, though sometimes also written in tenor clef or alto clef.
Both the fantasy and sonata are linked by a focus on the bass register and octaves in the bass clef.
Since much of the double bass's range lies below the standard bass clef, it is notated an octave higher than it sounds.
These instruments use bass clef for their low- to mid-ranges; treble clef is also used for their upper extremes.
Treble (alto) and tenor sizes do not transpose at all, while the bass and great bass sound one octave above written (bass clef) pitch.
Bass clef is the bottom clef in the grand stave for harp and keyboard instruments.
These days a special "percussion clef" is used, while previously the bass clef was used.
Consequently, when its music is written in treble clef, the tuba is a transposing instrument, but not when the music is in bass clef.
