Dr Ford's oral evidence
121 In Dr Ford's opinion, the first two bars of Kookaburra are its "signature". Although he agreed that it is a signature because of the lyrics, he said it is also the first thing you hear so it is the part of the melody that "sticks in your head".
122 When Marion Sinclair composed Kookaburra for the Victorian Girl Guides in 1934, she notated it in the key of F major. However, the quotation from Kookaburra in Down Under is in D major, although it is set against a background of B minor.
123 It was for this reason that Dr Ford's notation of Kookaburra in Example A was expressed in the key of D major.
124 In Dr Ford's opinion, the fact that Kookaburra was notated in F major in 1934 is not important when a listener comes to compare the differences and similarities between Kookaburra and Down Under.
125 Dr Ford demonstrated this point by singing the bars from Kookaburra. He said that most people do not have perfect pitch and could not recognise the particular key in which he had sung the song. The key, he said, was of no importance, as he could have just as easily picked a different starting note and therefore a different key.
126 Also, Kookaburra was intended to be sung as a round and Miss Sinclair probably made it up in her head and only wrote it down because she had to enter it in a competition. Dr Ford went on to say that when Miss Sinclair wrote the tune down, she had to start somewhere, but the note on which she started was somewhat arbitrary.
127 Dr Ford's evidence was that key can be an element of musical composition, but it is not always so. Classical music, such as Mozart's symphonies, is a notated art, but this is not usually the case with popular music which tends not to be written down until after it has been composed.
128 Dr Ford also pointed out that when Kookaburra is notated in D major, the second bar has a chord of B minor underneath it, which is the key in which Down Under is played.
129 Every major chord has a relative minor. As Dr Ford pointed out, if you take the bottom two notes of the chord of D major, they form the top two notes of the relative minor, which is B minor in the case of D major. Playing Kookaburra in D rather than F major therefore makes it easier to compare Kookaburra to the passages in Down Under, as they are at the same pitch.
130 Dr Ford went on to explain the difference between the sound of Kookaburra, which is in a major key, and the relevant passages of Down Under, which is in a minor key, as follows:
the melody is identical, but the chord that underpins it is different, and it gives a slightly different feeling … it's a bit like shining a different light on it.
131 Dr Ford therefore agreed that by changing the underlying harmony from a major to a minor key in Down Under, the impression that one receives from the same notes in the two songs is different.
132 Mr Lancaster asked Dr Ford to comment on a proposition drawn from the respondents' opening, namely, notwithstanding the similarity to the melody in the first two bars of Kookaburra, the different position of those two phrases in Down Under changes their nature; the musical sentences are different.
133 The following exchange then took place:
Q: Do you agree with that?
A: Well, it doesn't change their nature. They're still exactly the same, but we hear them slightly differently, because there's something comes in between. The first and second phrases of Kookaburra become the second and fourth phrases of the hook in Down Under, and so that third phrase, which is the basic what I called the basic hook comes in between them, as a sort of punctuation, so it separates them. They're not next to each other any more. So we do hear them differently, yes.
Q: And does that separation make them different?
A: No, no, no, they're exactly the same phrases, but we hear them differently.
134 Dr Ford adhered to this in cross-examination. He accepted that if Kookaburra is played in F major, the second phrase could not be played in B minor because that is not the relative minor of F major; the whole song would have to be transposed. But in Dr Ford's view, it makes no difference. He reiterated that changing the key from major to minor is "like shining a different coloured light on it" and he said:
The structure of the melody stays, but it has a different feel.
135 He also demonstrated this on the piano and said in cross-examination:
A: I mean, the key itself is not really relevant to an appreciation of the tune or to a recognition of the tune. The tune carries within its structure a kind of musical DNA which enables you to say, Well, that's Kookaburra Sits in the Old Gumtree because and its because the interrelationships of the pitches, rather than the actual specific names of the pitches, which is why you can then transpose it into any key you like and it will be recognisably the same.
Q: And our little again, not wedded to it, no offence if you say no to it our phrase melodic shape, to describe, is relatively apt to describe the interrelationship of the pitches?
A: What you say your use of melodic shape isn't wrong, it's just not precise enough. I mean, it does have the [same] melodic shape. It has the same melodic shape because it's the same melody.
136 Mr Catterns QC, who appeared for the respondents, also put it to Dr Ford that in terms of melodic structure, the separation of the two bars from Kookaburra by an intervening bar containing the basic hook in Down Under conveys something different.
137 Dr Ford did not consider it to be a large difference. He demonstrated this by singing and went on to say that, although the sentence has a different structure and sounds different, the ear connects the two pairs of phrases in Example E with each other because they follow on from each other.
138 Dr Ford conceded that the tempo of Down Under is probably a little bit faster than the tempo at which one would sing Kookaburra, but he did not consider this to be of significance in the comparison.
139 He pointed out that the tempo at which Kookaburra is played is likely to be a function of the age and ability of the school children who sing it and there was probably not a big difference between the tempo at which one would normally sing Kookaburra and the corresponding bars in Down Under.
140 Dr Ford also drew attention to the last two notes of each appearance of the phrases from Kookaburra in Down Under. He said the way you sing the word "tree" in the phrase "Kookaburra sits in the old gum tree" and "he" in the phrase "merry merry king of the bush is he" is to slur those words ("tree-ee" and "he-ee"). He then said that:
when you listen to the Business as Usual recording of Down Under the flute does the same thing. It slurs those final two notes, as though it's a memory of the song, or a reference to the song[…].
141 He accepted that slurring is a common musical device or technique with both flute and voice.