A-
A Capella- Without instrumental accompaniment
Adagio- A slow tempo, often used to describe entire movements (the second movement of a sonata is typically a slower pace such as adagio). Lit. "in a leisurely manner."
Allegro- A rapid tempo.
Andante- Moderately slow and even tempo. Faster than Adagio, slower than Allegro.
Arpeggio- The sounding of a chord's individual notes in succession