The are in the book songs without text. Check out samples from books: http: //osos.sweb.cz/preview-ukulele.pdf Sacred music is often played. Plenty of song-books exist. And the singer may accompany on the ukulele. But the problem occurs when he/she plays a solo. For the reason the book was written. You can find here 29 gospels and spirituals. Each song is arranged in two or three keys. What you need is to know your favorite key, take a capo and start playing, singing and worshiping our Lord. Crosspicking is technnique where you switch between that are next to each other with a plectrum. Mostly you will do it according to repeating pattern. Usually melody is on deep string and chord tones are on other strings