Aeolian Mode A medieval mode whose scale pattern is that of playing A to A on the white keys of a piano. This scale is also called the natural minor scale.
Locrian Mode A mode whose scale pattern is that of playing B to B on the white keys of a piano. While this mode theoretically existed in medieval times, it was never used.
Mode A scale pattern consisting of set intervals of whole and half steps. The primary modes are Aeolian, Dorian, Ionian, Locrian, Lydian, Mixolydian, and Phrygian.
Andante At a moderate 'walking' pace tempo
Basso continuo (Italian) Also called 'continuo' or 'figured bass'. Basso continuo is a system for notating chords developed thorugh the 16th century and popular through the 17th century. Basso continuo is in many ways similar to modern chord notation, but there are also important differences. In basso continuo the bass line is notated in standard notation, while other chord notes might be indicated with numbers and other symbols below the bass note.
Bossa Nova A latin style of instrumental music, originating in 1950's Brazil, derived from Samba, and characterized by a gentle mood, moderate to slow Samba rhythm and bass line, blended with subdued percussion and somewhat complex harmonic flavors heavily influenced by mid-20th century Jazz .
Chorale Originally, a hymn tune of the Lutheran Church characterized by blocked chords. In casual modern usage, a classical setting, eg, by JS Bach, of such a tune, in usually four-voiced, that proceeds in a primarily one-tone texture with both harmonic progression and individual voice-leading having equal importance. For this reason, they are often used as theory examples.