Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: A second-generation Slavic-American writes:

This short novel is an unsung classic of American immigrant literature, bringing to mind Willa Cather's "My Antonia" and Thomas Bell's "Out of This Furnace"--only much more full-bodied. I recommend it highly for reading groups, sociologists, students of American labor history, residents of Pittsburgh (the book's setting), older readers, and anyone appreciative of life's many paradoxes. Mrs. Kuzo, the 75-year-old blue-collar narrator, is a voice to be reckoned with--bawdy, poignant, impatient, hilarious, but never sentimental, an "old broad" in the best sense of the word. Accompanied by her madcap friend, Mrs. Lemack, she journeys from Pittsburgh to Philadelphia in search of the grave of blues singer, Bessie Smith, only to discover herself as she recollects her turbulent life as the daughter of poor steel-town immigrants. This book is a gem that I couldn't put down--gripping, hilarious, touching.