“Interval slurs resemble a swan dive, from the spring board of the onset of energy to the soaring glide, over and down again.
Or you can visualize this kind of energy as the torso strength and agile changes made by the weight lifter.
The same procedure applies to all intervals, no matter how large or small.
The intensity is raised or lowered on the preceding note. (play warmth of tone quality between the notes)
Avoid the scooops and slurps of a bad vocalist.
THINK this motion don’t actually do it.
Thinking it is enough.”
– William Kincaid (Kincaidiana, 40-41. via jennifercluff.blogspot.com)