Rhythm Matters is a series of eBooks on Brazilian and Cuban Percussion produced by One Voice Music.
 

• Over 40 videos, including how to hold instruments, playing techniques, patterns and swing
• Detailed information, explanation and practice tips for some of the most commonly used instruments in samba
• MangoDrum Player, an application that allows you to listen and practise at your chosen speed to all patterns in the eBook
• All patterns are written in standard and grid style notation
• A full composition, including call and response, intro, breaks, solo lines and ending
• All images, including notation pages can be printed out
• Background information about samba