Sealed with clay

• Performed as a minstrel, maybe
• Strummed an old string instrument
• Accompanied a madrigal, maybe
• Played some dulcet tones
• Played a pandurina
• Played an Elizabethan instrument
• Accompanied a bard, perhaps
• Smoothed concrete in a pavement

Wiktionary Word definitions in Wiktionary
vb. (en-past of: lute )