In music|lang=en terms the difference between pitch and pitchless
is that
pitch is (music) in an a cappella group, the singer responsible for singing a note for the other members to tune themselves by while
pitchless is (music) without pitch; unpitched.
As a noun pitch
is a sticky, gummy substance secreted by trees; sap or
pitch can be a throw; a toss; a cast, as of something from the hand or
pitch can be (music) the perceived frequency of a sound or note.
As a verb pitch
is to cover or smear with pitch or
pitch can be (
senseid)to throw or
pitch can be to produce a note of a given pitch.
As an adjective pitchless is
(music) without pitch; unpitched.