AGO Improvisation Techniques 3

Question 1

Which formal design would be most appropriate for improvising a Baroque-style prelude and fugue?

Accepted Answer

Free toccata followed by a strict imitative section

Answer

A Baroque prelude and fugue traditionally pairs a free, improvisatory toccata-style opening with a strict imitative fugal section.

Question 2

When building tension in an improvised organ piece, which registration technique is most effective?

Accepted Answer

Progressively adding mutation and mixture stops

Answer

Adding mutation and mixture stops progressively builds brilliance and density, effectively creating a crescendo effect on the organ.

Question 3

What is a 'head motive' in the context of organ improvisation?

Accepted Answer

A short, distinctive melodic cell that begins each section

Answer

A head motive is a short, memorable melodic idea used to begin sections and unify an improvisation through recurring reference.

Question 4

In improvising a liturgical postlude, which approach best demonstrates professional musicianship?

Accepted Answer

Developing material thematically from the service's closing hymn

Answer

Developing material from the closing hymn creates liturgical unity and demonstrates intentional, service-integrated musicianship.

Question 5

Which contrapuntal device involves stating a subject upside-down (reversing the direction of intervals)?

Accepted Answer

Inversion

Answer

Inversion presents a melody with its intervals reversed in direction—ascending intervals become descending and vice versa.

(AGO) American Guild of Organists Certification Practice Test