Possible Clues:

• Instrument with three strings and a triangular body
• It needs pluck to play in triangular formation
• Instrument with a three-sided body
• Wool-producer's call to introduce alkali-treated article with few strings
• Instrument a research establishment conjured up is given to space traveller
• British recalling space traveller's instrument
• Russian relative of a guitar
• Music maker beginning to bark in the style of a dog who was out of this world
• Instrument for "Lara's Theme"
• Russian instrument in the style of one held by Albanian etc, mostly