Complex sentence: With her husband, she co-wrote "Amagama Abantu (A Zulu Song Book)", published in 1911 and regarded as a landmark in the development of Zulu choral music.
Split into simpler sentences: With her husband, she co-wrote "Amagama Abantu (A Zulu Song Book)", published in 1911. This book is regarded as a landmark in the development of Zulu choral music.