Adagietto
rather slow (but faster than adagio)
Ad libitum, ad lib.
at choice, meaning that a passage may be played freely
Agitato
Agitated
Alla breve
With a minim beat equivalent to cut time, implying a faster tempo than the note values might otherwise suggest
Amore
Love
Amorso
Loving
Anima
Soul, spirit
Con anima
With feeling, spirited