Complex sentence: Laucke has had an international career spanning 50 years and averaging 150 concerts a season in 25 countries, including concert and television appearances in Carnegie_Hall Michael Laucke, New York 26-10-83.
Split into simpler sentences: Laucke has had an international career spanning 50 years and averaging 150 concerts a season in 25 countries. He has given concert and television appearances in Carnegie_Hall Michael Laucke, New York 26-10-83.