This book, written in Louise Marley's impeccable style, is a lovely tale of mystery, musical history, family responsibility and romance Two young girls both of exceptional talent are connected across time by the instrument called "glass armonica". One girl lives in the 21st century and one in the l9th century. Each has the responsibility of a young brother. The story involves the strong emotional ties to their music and to their brothers which draws them to communicate across the years. Ms. Marley has researched carefully the history of the glass harmonica and Benjamin Franklin's part in developing the instrument This is a lovely book for ages l5 and up . Tuck it into your bag to take along on your next trip. You won't regret it.