A CD single is a music single in the form of a compact disc. Originally the CD single standard was an 8 cm "mini CD"; later on the term referred to any single recorded onto a CD of any size, particula
A Japanese "Mini CD" single
A CD single (specifically CD5) of "The Catalyst" by Linkin Park. It contains a second track (comparable to a B-side): "New Divide (Live)".
Full-size CD singles were normally packaged in slimmer jewel cases (labeled here as '2') as compared to CD albums (labeled here as '1')
8 cm CD single with case, released in Japan
Mini CDs, or pocket CDs, are CDs with a smaller diameter and one-third the storage capacity of a standard 120 mm disc.
CD single
…A CD single is a music single in the form of a compact disc (CD). Originally the CD single standard (as defined in the Red Book) was an 8 cm (3-inch) "mini CD" (CD3); later on the term referred to any single recorded onto a CD of any size, particularly the 12 cm (5-inch) "full-size" disc (CD5). From a technical…
An 80 mm mini CD on the left, compared with a standard 120 mm CD on the right
A mini CD was a cost-effective solution for distributing small amounts of data, like device drivers.