Databases and retail stores that provide recordings of popular music without lead vocals include iCroons, Music Book Deluxe, Select-A-Track and Karaoke-Version.com. Amazon.com also provides over 300,000 downloadable karaoke versions of popular songs, although the recordings are not consistent quality, according to Ventura Karaoke.
Online databases, such as iCroons and Music Book Deluxe, provide users with access to music that may be discontinued or otherwise unavailable on the retail market. These websites typically offer a list of links with which a user can download or stream music without purchasing it. Retail stores, such as Select-A-Track, sell popular songs recorded without vocals.