The Rock Band Network was a downloadable content service designed by Harmonix with the help of Microsoft to allow musical artists and record labels to make their music available as playable tracks for
To create custom songs for Rock Band, authors of the Rock Band Network use REAPER to analyze their song and place appropriate note markers for all instruments in time with their music.
"Slider Gems", note gems connected by a semi-transparent colored line, can be played by sliding one's fingers up and down the touch-sensitive pad on the new World Tour guitar controller, or, alternatively, by simply pressing the corresponding fret button like with hammer-ons and pull-offs (albeit without needing to strum at all) if using an older Guitar Hero controller that does not have the touch-pad.