The creation and destruction of harmonic and 'statistical' tensions is essential to the maintenance of compositional drama. Any composition (or improvisation) which remains consonant and 'regular' throughout is, for me, equivalent to watching a movie with only 'good guys' in it, or eating cottage cheese.
Frank ZappaPeople make a lot of fuss about my kids having such supposedly 'strange names', but the fact is that no matter what first names I might have given them, it is the last name that is going to get them in trouble.
Frank Zappa