The notations provided in this book can be read and played on many instruments. Sine keyboard and guitar have now gained in popularity, the scope of book is widened to include tips for both instruments. 
The book also features lyrics under the notes and chords that can be played on your keyboard synthesizer. The same chords can be used for guitar accompaniments. Since playing instrumental music does not necessitate notes for repeated passages in the song, here the publisher have used repeat symbols with the lyrics for the repeated passage.