These great collections let men sing four-part a cappella harmony with a professionally recorded barbershop quartet. The books include TTBB parts and the online audio tracks feature full performances. Just use the unique code inside the book to stream or download the online audio, open the book, pick your part, and sing along! Volume 2 songs include: The Banana Boat Song · Goodnight, Sweetheart, Goodnight (Goodnight, It's Time to Go) · Happy Together · Hello Mary Lou · In My Room · The Longest Time · Silhouettes · Under the Boardwalk.