riff 1:
|---9-12-13-10----9-12-13-9----9-12-13-10----9-12-13-10-|
|-9-------------9------------9-------------9------------|
|-------------------------------------------------------|
|-------------------------------------------------------|
riff 2:
|---9-12-13-10-12----9-12-13-10-12----9-12-13-18-17----9-12-13-18-17-|
|-9----------------9----------------9----------------9---------------|
|--------------------------------------------------------------------|
|--------------------------------------------------------------------|
order:
riff 1
riff 2 (2x)
riff 1
riff 2