7. Music Links
These are my favorite links to research sheet music, literature and biographies.

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The Classical Music Archives, the largest archive of its kind on the web, offers tens of thousands of classical music files in MIDI, Windows Media and MP3 format you can listen to at the click of your mouse.
Most composers are represented - with biographies and timelines. A major award-winning cultural site which provides its own indexes and search engines by keywords or composer.
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Welcome to the Mutopia Project ... a place where sheet music is free for everyone! Download it, print it out, and share it.
All music is available as Postscript (.ps) and PDF (.pdf) files, for both A4 and Letter paper sizes, as well as Lilypond's own file format (.ly).
Audio previews of the music are available as MIDI (.mid) files; these are computer generated but give a rough idea of what the music sounds like.
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Welcome to Project Gutenberg, .... Project Gutenberg is the oldest producer of free electronic books (e- Books or e- texts) on the Internet. Our collection of more than 13.000 eBooks was produced by hundreds of volunteers. Most of the Project Gutenberg eBooks are older literary works that are in the public domain in the United States. All may be freely downloaded and read, and redistributed for non-commercial use.
Project Gutenberg volunteers have been engaging in digitizing public domain sheet music, using a variety of techniques, to enable study and performance. For the most part, the musical pieces created have been chamber music, with composers such as Brahms and Beethoven.
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The Werner Icking Music Archive contains ready- to-print sheet music, most in the form of PDF files to some of them you can listen as MIDI files.
The archive contains "free" sheet music, free for non- commercial usage. This means that you may download the files and print paper copies, but neither the files nor the paper copies may be sold.
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Welcome to Wikipedia, a free- content encyclopedia in many languages. In this English edition, started in January 2001, we are working on 389667 articles.
It is collaboratively edited and maintained by thousands of users via wiki software, and is hosted and supported by the non-  profit Wikimedia Foundation. In addition to typical encyclopedia entries, Wikipedia includes information more often associated with almanacs, gazetteers, and specialist magazines; and coverage of current events.

MUSIC THEORY
http://www.musictheory.net/downloads.html download free "Music Trainer" and install it on your computer. Great for practicing reading notes, intervalls, ....and more.
http://www.dolmetsch.com/theoryintro.htm    music theory & history online
http://www.emusictheory.com/practice.html online practice, reading notes, Keysignature, intervalls, ... .  
http://www.notationmachine.com/how_to_read_sheetmusic/ online book: "How to read sheetmusic", ... very good.
http://jeanies_home_studio.tripod.com great songs for beginners in midi and pdf, not all links work.
Sheet Music USA - great music theory and some songs and links.
http://www.sheetmusicarchive.net/ classical sheet music for free in pdf - format. Limited to 2 downloads a day, great selection.
You can listen and print these scores (available in postscript and pdf). Mfiles - Jim Paterson's online archive of sheet music typeset with Sibelius. Scores available in pdf and in the Scorch previewing format (available for macintosh and windows only).
http://www.bookmarkmusic.com/index.html buy sheet music on CDs and print only what ever you need and how much you need
Words & Music, ... popular sheet music in pdf format to download.
Mr. Piano - free piano sheet music - A number of sheet music from movies and popular artists, try this link too.
Celtic Midi files Music to listen to while you read Celtic folklore at the www.sacred- texts.com
http://www.shermusic.com/ We here at Sher-Music-Company are pleased to make available to musicians worldwide an assortment of the finest jazz and Latin music books on the market. Our books are made by musicians, for musicians and are designed to be the most informative and comprehensive books ever published on their respective topics. All books are sold with a money-back guarantee for individual customersand with normal trade terms for retail outlets and distributors.
The Choral Public Domain Library - a large archive of free choral music. Most scores are available in pdf format and accompanied by source files in many different formats like Finale, Sibelius, MUP, M-tx,PMX etc.
Johan Tufvesson's free sheet music archive Library - instrumental music from the 17th and 18th century typeset with PMX. Scores are available in postscript and pdf format.
M.A.B. Soloists's free sheet music archive Library - vocal music from the 10th - 20th century typeset with MusiXTeX. The scores are available in postscript format packed in zip files with accompanying typesetting source files.
Acadia Early Music Archive - Gordon Callons archive of instrumental and vocal music from renaissance and baroque, typeset with Score and Sibelius. Scores are available in postscript format.
Project Runeberg, music section - elder Swedish music. Scores available in postscript and pdf format typeset with PMX, accompanied by source files.
Eva Toller's Musical arrangements for choir - scores available in pdf format accompanied by MIDI files. Scores typeset with Magix Notation and Finale Allegro. Finale source files available on request for a modest fee.
Peter Billam's free sheet note archive of compositions and arrangements - typeset with his own music typesetting program muscript. Scores are available in pdf format.
The Recorder Player's Page containing sheet note recorder music by a couple of composers and arrangers. Scores typeset with diffent programs and available in postscript, pdf and gif format.
Alain Naigeon's renaissance music web site - including renaissance music scores suitable for recorders, typeset with Encore.
Ensemble Arenaï's web site - vocal music from the renaissance, mostly French. Scores available in pdf format, most of them typeset with Finale, a few of them with source file.
Coppini Edition - contrafacta of secular music from Monteverdi and other composers, edited and typeset with Finale by Jens Peter Jacobsen. Scores are available in pdf format.
Classical guitar sheet music - Jean-François Delcamp's archive of free classical guitar music scores. The scores, typeset with Finale and NotePad, are available in pdf format.
Tablatures pour luths, guitarres, theorbes - Alain Veylit's archive of music for plucked string instruments typeset with his own programs Django and Stringwalker.
The collection contains tablatures of primarily early music, ao. the Folger "Dowland" manuscript for which the archive also offers online facsimiles. The scores, some of them with additional note staves, are available in pdf format and are accompanied by source- and MIDI files
ABC Archive Of Early Music - Taco Walstra's archive of lute music typeset with the program abctab2ps. There are tablatures as well as note notated music. The scores are available as postscript packed in zip files.
The Sheet Music Archive - John Mamoun's archive of free piano music scores, some of them scanned in from public domain prints, other computer typeset. The scores are available in pdf format.
Free and Sample Sheet Music - Fred Nachbaur's comprehensive list of links to free sheet music
Medieval Music & Arts Foundation's - list of links to free early music scores.
http://www.lightandmatter.com - Contents of the Physics Area: The Light and Matter series of introductory physics textbooks: The books are available in print, and free in digital form. To download a book or view its table of contents, click on its title in the bar on the left.