Possible Clues:

• Empaths pick them up
• Informal mental or emotional communications
• Feelings (Sl.)
• Competes, having got hold of second-rate instrument
• There are many of them, but they're not in the majority
• Mental or emotional sensations
• One of Hampton's instruments
• Xylophone cousin
• Feelings emanating from a person or place
• Marimba's cousin