Alberti bass

Alberti bass is a kind of broken chord or arpeggiated accompaniment, where the notes of a chord are played in the order of lowest, highest, middle, highest. The C major chord (C E G) would be played (C G E G). The pattern is repeated.

Gig

A gig means a job for a musician.

Perfect pitch

Perfect pitch is the ability to identify the pitch of a tone without any outside assistance.

Homophony

Homophony is a single melodic line accompanied by chords.

Monophony

Monophony is just one melodic line without an accompaniment.

Counterpoint

Counterpoint means "point against point". It is combining more than one melodic lines that are very different from each other and move independent, but they still sound harmonious when played at the same time.