The internet houses a wealth of Sheet Music available for download and purchase.
Below are a sampling of useful resources for growth, study, and pleasure.
Books
Power Performance for Singers
Zen in the Art of Archery
The Inner Game of Golf
The Power of Now
Great Singers on Great Singing: A Famous Opera Star Interviews 40 Famous Opera Singers on the Technique of Singing
The Voice: A Memoir by Thomas Quasthoff
Kirk Douglas The Ragman's Son An Autobiography by Kirk Douglas
Classical Music
Music:
24 Italian Songs & Arias - Medium High Voice (Book/CD)
24 Italian Songs & Arias - Medium Low Voice (Book/CD)
26 Italian Songs and Arias: An Authoritive Edition Based on Authentic Sources [Medium / High] (Italian Edition)
26 Italian Songs and Arias: Medium Low
Prima Donna's Album: 42 Celebrated Arias from Famous Operas
Coloratura Arias for Soprano (G Schirmer Opera Anthology Series)
The Whole Cantolopera Series. This is a sampling:
Verdi Arias for Soprano volume 2 Book & CD (Cantolopera) (2008)
Cantolopera: Arias for Mezzo-Soprano - Volume 2: Cantolopera Collection (Aug 1, 2002)
Puccini Arias for Tenor: Cantolopera Collection Cantolopera: Arias for Baritone - Volume 3: Cantolopera Collection (Aug 1, 2002)
CDs:
Cecilia Bartoli - If You Love Me (Se tu m'ami ),
18th-Century Italian Songs
Maria Callas
Popular Music From TV, Film and Opera
DVDs:
Puccini - La Boheme / Baz Luhrmann, The Australian Opera (2002 Edition)
Great Stars of Opera - Telecasts from the Bell Telephone Hour 1959-1966
Musical Theater
Music:
All of The Singer's Musical Theatre Anthology. This is a sampling:
The Singer's Musical Theatre Anthology - Soprano BK/2CDS (Singer's Musical Theatre Anthology)
The Singer's Musical Theatre Anthology - Mezzo-Soprano BK/2CDS (Singers Musical Theater Anthology)
The Singer's Musical Theatre Anthology - Tenor BK/2CDS (Singers Musical Theater Anthology)
The Singer's Musical Theatre Anthology Vol. 4: Baritone/Bass BK/2CDS (Singers Musical Theater Anthology)
Wicked - Piano/Vocal Arrangement
Musical Theatre Anthology for Teens - Young Women's (Book/CD)
Musical Theatre Anthology for Teens - Young Men's (Book/CD)
Kids' Broadway Songbook (Book/CD)
CDs:
Wicked (2003 Original Broadway Cast)
Avenue Q (2003 Original Broadway Cast) [CAST RECORDING]
Seussical: The Musical [CAST RECORDING]
Les Miserables (1987 Original Broadway Cast) [CAST RECORDING]
Evita (1978 Original Broadway Cast) [CAST RECORDING]
DVDs:
Broadway's Lost Treasures Collection (Broadway's Lost Treasures 1-3 & The Best of the Tony Awards - The Plays)