School Music Matters is a music education advocacy resource center operated by Music K-8 magazine publisher Plank Road Publishing. Without general music secondary programs are going to fade. Help advocate for your colleagues in gen music.
The International Music Score Library Project (IMSLP), also known as the Petrucci Music Library after publisher Ottaviano Petrucci, is a project for the creation of a virtual library of public domain music scores, based on the wiki principle.
Tons of resources for teaching general music with technology. Check out games, quizzes and worksheets. Excellent resource for music and technology in the classroom.