Two great music databases:
Grove Music Online has been the leading online resource for music research since its inception in 2001. It is a comprehensive compendium of music scholarship offering the full texts of The New Grove Dictionary of Music and Musicians, 2nd edition (2001), The New Grove Dictionary of Opera (1992), and The New Grove Dictionary of Jazz, 2nd edition (2002), as well as numerous subsequent updates and emendations. Including more than 50,000 signed articles and 30,000 biographies contributed by over 6,000 scholars from around the world, Grove Music Online is the unsurpassed authority on all aspects of music.
IPA Source is a large collection of IPA (International Phonetic Alphabet) transcriptions and literal translations of art songs and arias originally in Latin, French, Italian, German, and Spanish. IPA Source contains more than 5,700 texts, including about 1,000 aria texts. Special features include audio recordings of many standard pieces designed as pronunciation help for the singer and links to other online resources such as opera libretti, song texts, and online scores.