UJAM
This creative site allows the user to sing or play a melody and it automatically analyzes it and fits it into a song, complete with instrumental accompaniment. You don't have to be a trained musician to use the site successfully, but for the very beginner, they have a large selection of audio tracks that you can "re-jam" into a brand new song. Instructions are below:
Soundation
A powerful online music studio with recording, effects, virtual instruments, and over 600 free loops and sounds.
For more information, FAQs and video tutorials visit:
Freeplay Music
Here you can find music clips in a variety of styles that are free to use in student projects. Clips are already created in small segments, and you can search by length of clip, if you need to. It is a quick way to add audio to a project without violating copyright laws.
However.....
From their "Terms of Use" page:
2(d) Free Student Educational Use:
Subject to your full compliance with the terms of this paragraph 2 (d) and full execution of a FPM license, FPM grants free master recording and synchronization rights to students, to the FPM Production Music Library, excluding the FPM Indie Artist and Sound Effects Library, when FPM music is used by students within a school or class assignment. The assignment must be part of student curriculum, must only be viewed or heard within the classroom, campus, on a school’s closed circuit television and/or public announcement system and shall be free from any charge or admission fee. Free Student Educational Use excludes the use by any school in extra-curricular activities including, without limitation, the use in clubs and the use of any kind in performance, non-broadcast multimedia, DVD duplication, distribution and/or broadcast on a public or educational access TV, cable or radio channel, web, blog, and podcast.
Noteflight
Noteflight® is an online music writing application that lets you create, view, print and hear music notation with professional quality, right in your web browser. Work on a score from any computer on the Internet, share it with other users, and embed it in your own pages. Noteflight is free for individual use.
Liedahl's Example: http://www.noteflight.com/scores/view/24a8b6fd6b4b10255fe38f0426ecc53e08c06130
Some Additional Resources and Ideas: