B - C
D - F
G - L
M - O
P - R
T - Z
D - F
  A four-note chord built up in 3rds from D (D-F#-A-C). The notes of the D7 chord are often inverted to form a 3-note D7 chord.
D.C. Repeat from the beginning.
The right pedal, which sustains the sound, played with the right foot.
  Da Capo al Fine. Return to the beginning and play until Fine (end).
  The middle section of sonata-allegro form. Melodic fragments of the exposition themes are treated through modulations (changing keys) to build tension.
D.S. - Return to the sign.
Three counts or beats.
  And (Italian). For example, cresc. e rit.
espr. Expressively.
  The first section of sonata-allegro form. The exposition presents the 1st theme, 2nd theme, and an optional closing theme. In the classical sonata the exposition repeats.
Hold this note longer than usual.
  The last movement of a symphony, sonata or act of an opera.
  End here.
Play the 1st ending and repeat from the beginning. Then play the 2nd ending, skipping over the 1st ending.
A flat lowers a note one half step.
  An early Portuguese dance form that provides the basis for variations.
Forte then piano (loud, immediately followed by soft).
  The interval of a fourth spans four letter names (Ex. C up to F, or G down to D). On the staff: line-(skip-a-line)-space, or space-(skip-a-space)-line.
  A fiery Bohemian dance in 3/4 meter, with shifting accents.