Assertion: vibraphone's tone | /r/CapableOf | mellow the tone
Facets:
value: further
type: MANNER
Source sentences:
text: However, Schluter didn't just copy the Leedy design, he introduced several significant improvements such as making the bars from aluminum instead of steel for a more "mellow" basic tone, adjustments to the dimensions and tuning of the bars to eliminate the dissonant harmonics in the Leedy design (further mellowing the tone), and the introduction of a damper bar controlled by a foot pedal enabling it to be played with more expression.