Today in Music History: Songfacts Calendar
Music History and good lists to other History sites: SoundPiper
Concise historical background of music: Internet Public Library
Instrument History - Musical Instruments and the Masters
Brief History that includes Music Element Characteristics: - Think Quest
And extremely short history of jazz: http://learnmusictheory.net/jazz/index.asp?FileName=04-01-01-ExtremelyShortJazzHistory
Interactive Music History Timeline: http://www.theguardian.com/music/interactive/2011/jun/11/history-modern-music-timeline
The history of popular music according to Google
-Google Music Timeline: http://research.google.com/bigpicture/music/#
Geography of Music - http://www.pbs.org/keepingscore/map-timeline.html
*History of Rock Curriculum - http://teachrock.org/lesson/how-to-study-rock-and-roll/
Rock and Roll Lessons - https://www.rockhall.com/learn/education/digital-classroom