Thursday 25 February 2016

Melodies, Rhythms, Harmonies and Modulations

Melodies
Flying Bed:
I wrote a melody based on an extract from Stephen Laberge's "Exploring The World of Lucid Dreaming." The extract was a story about a dream involving a man lying on a bed flying around a room.

Modulation:
The modulation was to write the melody out backwards.

Mathon Church:
I wrote a melody inspired by a location I had never been to before. I drove to a town called Mathon and visited the church there.

Phone:
I took the numbers in my mobile number and used them as musical directions. In the first half of the melody I regarded each number as one semitone, so for example a 0 would represent unison or a 7 would represent perfect 5th. I then used these semitones to either ascend or descend, depending on which one was preferable. In the second half of the melody, starting on bar 5, I regarded each number as tablature on the bottom string of the guitar. For example, a 7 in the phone number would  mean the 7th fret of the bottom string.

Modulation:
I used a melodic inversion for the modulation.

Rhinog Run:
This melody was based on a picture of a dog chasing a rhino with caption saying "it's all about the attitude."

Modulation:
Octave dispersion - I replaced some notes in the piece for their equivalent octaves (above or below.)

Serial Filler:
I wrote a melody using serialism. This means using each of the 12 tones once before using any of them again.

Modulation:
I used augmentation and diminution to produce a new rhythm.

Slabfoot:
This melody is based on an event in my life. When I was a child I was searching for insects behind a slab. The slab then fell on my foot.

Modulation:
I added embellishments to this piece. I used vibrato, a trill and glissando.

Rhythms
Found Sound:
I recorded the sound from a fridge at my work.

Modulation:
I copied and pasted it into a rhythm.

Improvised Rhythm:
I tapped a rhythm on my desk and recorded it.

Modulation:
I then reversed it.

Play Then (Speech):
I recorded my friend speaking.

Modulation:
I then time stretched the recording to create a noticeable rhythm.

Metric Modulation:
I wrote a rhythm in 3/4.

Modulation:
I then metrically modulated it into different time signatures.

Strathingsky:
I listened to Stravinsky's "Rite of Spring" then wrote a rhythm inspired by it.

Modulation:
I then used additive and reductive rhythms to create a slightly altered rhythm.

Time Signatures:
I rolled a dice to get three different time signatures: 16/8, 9/16 and 18/16. I then wrote a drum rhythm that used each of these time signatures.

Modulation:
I then wrote it out in reverse.

Harmonies
Bitonality:
I wrote a chord progression using triads from both C major and D major. (A total of 6 notes per chord.)

Modulation:
Tritonality - I added triads from an extra key (E major) to create 9-note chords.

Chord Flakes:
I wrote 3 groups of 4 serialist triads.

Modulation:
I put each chord into the key of E major. I did this by replacing the out of key notes with the nearest diatonic note.

Dice:
I rolled a 12-sided dice for random numbers. Each number related to one of the 12 notes. I grouped these notes into chords and created a chord progression from it.

Modulation:
I added bass notes beneath the chords.

Quartal Harmony:
I wrote a 16-chord progression using quartal harmony. This means chords with intervals of 4ths.

Modulation:
I gave each chord a number from 1-16 in order and rewrote the progression, with the same rhythm, but wrote in this order: 1, 3, 5, 7, 9, 11, 13, 15, 16, 14, 12, 10, 8, 6, 4, 2.

Van Gogh:
I wrote a progression inspired by a historical figure. I chose Van Gogh.

Modulation:
I gave each interval its own replacement interval:

Unison remains the same
b2 becomes 4th
2nd becomes b6
b3 becomes 6th
3rd becomes 5th
4th becomes b2
b5 becomes 2nd
5th becomes 3rd
b6 becomes 7th
6th becomes b7
b7 becomes b5
7th becomes b3

For example, if the original chord had a minor 3rd interval in it I replaced that interval for a 6th. I did this for each note to create new chords.

Weetabass:
I wrote a serialist bassline and added 4-note chords over the top.

Modulation:
The modulation for this progression was to shift the top two notes of each chords and use them to replace the top two notes of the next chord. I used the top two notes of the last two chords to replace the top two of the first chord.

Wednesday 10 February 2016

Solo improvisation

We recently had a visit from UK jazz guitarist Lee Jones, who discussed techniques for guitar solo improvisation. The main theme was to incorporate three separate "gears" of solo development:

Stages of solo improvisation
First gear - At the start of the improvisation, a good solo might begin with only a few well placed notes. These could be just one pitch played rhythmically or multiple notes with large gaps in between. Lee emphasised how important the space in between notes can be when drawing in an audience. When leaving long pauses in between melodic phrases, the audience is anticipating more so the longer they are left to wait the more satisfying it might sound when more melodic lines are played.

Second gear - After the initial notes and minimalist melody lines, the second stage would be to develop melodic phrases into longer sections whilst minimising the amount of space in between notes. It seems to me that this level of improvisation is important for focusing on cementing the main melodic themes and introducing interesting rhythms.

Third gear - Lee demonstrated these levels whilst playing over a chord progression. The third and final stage of his improvisation was to demonstrate a level of technical virtuosity. If performed well then the band might pick up on it and follow. Rhythms and basslines might become more complex to fit this stage. Some guitarists might use this stage to shred as fast as possible whereas others might weave complex melodies and harmonies to shock the audience. This might include playing outside the key with a high level of precision. Lee seemed to be capable of both these things so his solo was an effective demonstration of this three-stage method.

We discussed this three-stage solo method further with Andy, focusing mainly on the third stage. Andy suggested that the technical virtuosity of shredding could be substituted for experimenting with the sound you can produce with the guitar. As long as it still has the power to shock an audience, a guitar solo might end with dissonance and noise. We looked at Dimebag Darrell's solo in "I'm Broken" by Pantera and compared it to Lee's idea about three solo stages.


The solo (starting at 2.30 in the video above) begins with a simple blues bend followed by a short melody. The next section (2.36) introduces faster pentatonic and modal runs and in the final section (2.50) Dimebag performs screeches out of time to the backing rhythm. 
begins the final section with these unique screeching sounds and ends the solo with a run up towards the final climactic bend.

Lee suggested that if you begin a guitar solo with shredding then there is nowhere to go from there. Unless you are skilled enough, all the things you play after a heavy introduction like that might seem pointless and uninteresting.

Playing outside
We discussed how to effectively play outside the key by using non-diatonic tones. The idea was to shift up a semitone to create more tension in the sound, adding an extra layer of interest to a solo. Lee's advice was to focus on how to resolve it while practising over a single minor chord. His method was to aim for the strongest chord tones when resolving. For example, you could solo over a D minor chord using a D natural minor scale then shift it up to Eb natural minor and resolve it by aiming for the root, minor third or fifth of E minor (E, G and B). Not only does the dissonance add an extra layer of interest to a solo, it also makes the resolution more powerful and appealing to the ear.

Stacked 4th chords
Lee's lesson also included the concept of stacked 4th chords, otherwise known as quartal harmony. Quartal harmony refers to the use of diatonic 4th intervals in a scale. For example, C major is made up of C D E F G A and B. The usual 7th chords in C major are made up of diatonic 3rd intervals of the scale:

C E G B (Cmaj7)
D F A C (Dm7)
E G B D (Em7)
F A C E (Fmaj7)
G B D F (G7)
A C E G (Am7)
B D F A (Bdim7)

In quartal harmony, these chords are replaced with chords with diatonic fourth intervals:

C F B E
D G C F
E A D G
F B E A
G C F B
A D G C
B E A D

The lack of any 3rd in these chords makes them impossible to define as either a major or minor chord. This ambiguity allows these chords to be used in multiple situations. In Lee's lesson we took it in turns to alternate between a vamp in D minor, an improvised solo and improvised comping with these chords. The ambiguity of the chords allows free movement across the neck behind the solo.