Online music scores - free downloads!

I've found several sites online that have useful music available for free download. I listed specific links to some of the repertoire, mainly to show that the literature available was unlike the typical "free sheet music" literature available for download. There really is a lot out there. So when you need the rep, but don't have the book handy - try these sites:

For Art Song Literature

Examples:

• Brahms, high voice
• Debussy, Ariette Oubliees
• Debussy, Chansons de bilitis
• Mahler, Songs of a Wayfarer and Kindertotenlieder
• Schubert lieder
• Schumann lieder
• Wolf, Goethe Lieder
• Wolf, Morike Lieder

Also try - Art Song Central

It has a crazy variety of links, such as:

• The entire works of Mozart
  
• The complete works of Brahms
  
• Vocalises and Methods
  
• Operatic Vocal Scores

Another site for Opera Literature

Examples:

• Carmen - Bizet
  
• Lucia di Lammermoor - Donizetti
  
• Faust - Gounod

For Chamber music literature

Mozart chamber music and concerti

Brahms clarinet/viola sonatas

Repertoire for cello and piano (for these sections, scroll down a bit, after solo rep)

Repertoire for viola and piano

Repertoire for violin and piano

Repertoire for flute and piano

For: Gilbert and Sullivan

Examples of literature:

• The Gondoliers
  
• HMS Pinafore
  
• The Mikado
  
• The Pirates of Penzance
  

(choose BW PDF for black and white prints)

The Petrucci music library has all kinds of scores, as does this music archive.

Yes, it's legal.