Possible Clues:

• Sight, hearing and others
• Quintet important to empiricists
• Feels in one's bones
• Touch and sight
• Taste, sight and touch
• Classic quintet
• Taste and hearing
• Lessens, reducing by a pound -- wrongly, one feels
• "And I've got one, two, three, four, five ___ working overtime" (XTC lyric)
• John Denver "You fill up my ___"