The method of 5 wherein said {TAIL ~ alteration} adjusts the tonal characteristics for {HEAD ~ aesthetic purposes} 
The method of 5 wherein said { TAIL ~ alteration } adjusts the tonal characteristics for { HEAD ~ aesthetic purposes }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD