Here are some links to free Music Notation sites and programs
http://musescore.org/
http://www.noteflight.com
http://musescore.org/
http://www.noteflight.com
LInks to good videos on musical topics.
TED talk on four important things abut sound.
TED talk by Mark Applebaum, composer
TED talk on four important things abut sound.
TED talk by Mark Applebaum, composer