Musical

BeatGreets.com
Free online music greetings from hundreds of pop, hip-hop and rock superstar artists.
http://www.beatgreets.com/

BopCards
Personalized animated musical ecards for birthdays, romance, and holidays.
http://www.bopcards.com/

La Scena Musicale
Features classical music clips for holidays by 3 or 4 artists. Choice of Valentine or Christmas greeting. One audio piece of Pavarotti singing Ave Maria.
http://www.scena.org/icard/icard.asp

Musical Greetings
A gallery of images and a selection of music to create cards for all occasions. Audio is Midi format.
http://www.musicalgreetings.com

Radiocards.Net
Free cards using embedded radio stations from Ireland and England. Features a catalogue of cartoon images, scenic photos, animals, sports, and occasions. Requires the RealPlayer G2 plugin.
http://www.radiocards.net/

Wanart.ca
Offers animated musical greeting cards with culturally appropriate English and Asian designs by artist Joyce Wan.
http://www.wanart.ca/

WriteSongs4You.com
Features original songcards for all occasions. Offers custom options.
http://www.writesongs4you.com/

Zworks Forever Yours
Offers a selection of photos, graphics and music for birthdays, holidays, humor and general occasions. Audio is Midi format.
http://www.zworks.com/forever/