public function containsPitch($givenPitch, $strict = true) {
		$pitches = $this->getPitches(-1, false);
		$givenPitch->octave = null;
		foreach ($pitches as $pitch) {
			$pitch->octave = null;
			if ($strict) {
				if ($pitch->equals($givenPitch)) {
					return true;
				}
			} else {
				if ($pitch->isEnharmonic($givenPitch)) {
					return true;
				}
			}
		}
		return false;
	}