This book presents over 100 twentieth-century Spanish composers with over 200 pieces (largelly original works) for cello and piano. Each entry includes information within the following guide: complete name and dates of the composer, complete title of the piece, date and place of composition, first performance information, publisher, date and city of publication (if ever published), and recordings. Additional information such as number of movements, approximate duration, dedications, references to specific sources, and location of manuscript is given under observations. Besides a listing of the multiple sources consulted (books, catalogues, internet sources, sheet music, recordings and unpublished material), the catalogue provides several helpful appendixes referring to: Publishers, Record labels, Archives, Composers in chronological order and Works by approximated duration. This book is an important musicological tool for those performers and scholars searching the twentieth century repertoire for cello and piano. It is the first study of this particular repertoire in Spain and worldwide.