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The bII6 chord
Transcript of The bII6 chord
Leonardo Leo Cello Concerto no.6
Alessandro Scarlatti Sento nel core
Bach: St.Matthew Passion, 'Erbarme dich'
Mozart: Fantasia in D minor
Beethoven: 'Moonlight' Sonata opening
smooth exit via viio7 of V
bII chord - points to remember:
(example: key of C, same chord C+ or C- so Db F Ab)
- it's a major triad built on flattened 2nd scale degree ('Phrygian'2nd)
- don't double the root: same problem as doubled L.N.
- don't double the 5th (the Ab wants to fall to G)
- it's a ii6, the common substitute for IV, so: double it!
(that is, double the subdominant to emphasize its 'IV' nature;
or in other words, DOUBLE THE 3RD.)
- the Db ALWAYS falls -
either through the o3 skip to B
or the 'softened' (more usual) way, passing through the C first
by means of a cadential 6/4 or viio7 of V)
'parallel descending triads'
B = L.N. of C; G# = L.N. of A-
V4/2 OF bII6 (i.e. Bb major)
*notice the enharmonic equivalence here and store it away for future reference: V7 of bII = x6 (F to D# = x6 interval)
Hello - Lionel Ritchie
Hello - Glee version
song starts here
listen for 'ra-doh-ti-doh rather than 're-doh-ti-doh'
(at the very beginning, within the first 10 seconds)
Bach: 2-part invention #13
Czerny: Symphony #1 in C minor (4th movement)
Mozart: 'Queen of the Night' aria from 'The Magic Flute'
bII6 - o7/V - V
Ab = V4/2 of Eb major (which is bII of home key of D minor)...AND...it's the enharmonic EQUIVALENT of G#.
G# = viio7 of V in D minor
Diana Damrau: 'Queen of the Night' aria from Mozart's 'The Magic Flute'
Ayla Erduran b.1934
Delphine Galou/Les Siecles
The bII chord
- has the same function as a normal (diatonic) ii6:
it moves to V, bass notes fa-soh
- build a MAJOR TRIAD on the FLATTENED 2nd
scale degree ('ra' as opposed to 're')
- it's found in BOTH minor and major keys
- in MAJOR keys it needs an extra acccidental ('le') to
complete the major triad (C major: Db F Ab)
- since it operates like a ii6, and has pre-dominant function,
the THIRD is usually DOUBLED.
- you MUST resolve that FLATTENED 2nd scale degree
DOWN (either directly to 'ti' of V or delayed, through 'doh')
same spelling in both minor and major
VI bII6 - - - - - - - - - - - - - - - - - - - - - - - V (cad.6/4) V7
Ra (G natural) resolves to ti (E#)
through doh (F# = appogg.)
'Neapolitan' 6th (i.e. 1st inversion triad)
notice the descending 5ths that go to bII (ra) vs iio6 (re)
Because it's a major triad
it can support its own secondary tonality,
unlike the diatonic iio, a diminished triad