The ABC Musical Notation Language: Complete tutorial on ABC notation, with links to software, collections, and a tune finder.
Chiff and Fipple: Online community, with whistle articles and ratings, and a message board.
The Cyberhymnal: An extensive database of hymns, with scores, midi files, and information on the composers and lyricists.
DMOZ.org: Tin Whistle: Internet directory with multiple links to whistle-related sites.
The Flow: Traditional Irish Flute Playing: Describes playing styles, and offers a discography and related resources.
Gladly Playe Wyth Stryngs: Performs music centered around melodies on twinned hammer dulcimers, violin, and Irish whistles, in folk style, influenced by Irish and Scottish music.
His Kids Radio: A Christian station for the "young of heart".
Online Hymnal: Words and midi files for a wide variety of hymns.
Hymns, Gospel Songs and Spirituals: Database of Christian songs, with words and midi files.
IMC Christian Midi Archives: Over 250 Christian midi files, some with lyrics.
Index of Folk Music Tablature: A collection of traditional songs, with melody in standard notation, some with harmony and guitar chords.
Irish Music and Whistle Resources: Whistle Font: Offers a gratis whistle font for the music notation challenged.
Musical Resource and Online Hymnal: Mammoth database of hymns and midi files.
Praise Charts: Commercial site offering lead sheets and full charts for many popular praise and worship songs, along with sound files. Free charts are regularly available.
Southern Harmony and Musical Companion: Database of hymns, with scores and midi.
The Sacred Harp Index: Lyrics of the songs in The Sacred Harp, 1991 edition. Searchable by title, page number, author, composer, first line and meter.
Tully Whistles: Homepage of Erik Tulberg, whistle maker. Includes sound samples.
Whistle and Squeak: Hymns, Christmas carols, and folk song charts with tablature. Also offers related resources.
Whistles by Mack Hoover: Maker of sweet-sounding whistles. Description of models, photos, sounds, poems, and related links.