Unit 7, Lesson 2 of 2
Brainlag Plus Music

A bass under a melody

Music theory, Bass lines and melodic decoration, 12 minutes

The other way to answer question 2: choosing chords and their positions so the bass line moves well against the melody.

The bass is a melody too

Question 2 lets you either name the chords or write a bass with figures under the melody. Either way you are choosing a chord and its position for every note, and the position decides the bass note.

  • Root position at the cadence: V to I, both with the root in the bass.
  • Inversions in between, so the bass moves by step instead of leaping: Ib between I and IV, Vb before I, IIb before V.
  • Contrary motion against the melody wherever you can, and never consecutive 5ths or octaves with it.
A bass for a falling melody: F, B flat, A, C, F (I, IIb, Ib, V, I), mostly by step and against the tune

The figures then follow from the positions: 6 for a first inversion, six-four for the cadential Ic, nothing for root position.

The rest of this lesson and its 7 practice questions are in Plus Music.

Screen 1 of 3, free to read.

  • 7 exam-style questions, marked as you go, each with a worked solution
  • Anything you get wrong is saved to your flashcards