Compact disc

Compact disc (CD) is a digital optical disc data storage format. The format was originally developed to store and play only sound recordings but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. Audio CDs and audio CD players have been commercially available since October 1982.

Standard CDs have a diameter of 120 millimetres (4.7 in) and can hold up to about 80 minutes of uncompressed audio or about 700 MiB of data. The Mini CD has various diameters ranging from 60 to 80 millimetres (2.4 to 3.1 in); they are sometimes used for CD singles, storing up to 24 minutes of audio, or delivering device drivers.

At the time of the technology's introduction in 1982, a CD had greater storage capacity than a personal computer hard drive. By 2010 hard drives commonly had capacities exceeding those of CDs by a factor of several thousand.

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Boris Grebenshchikov

Boris Borisovich Grebenshchikov (Russian: Бори́с Бори́сович Гребенщико́в), stage name Boris Grebenshikov, also known as Boris Purushottama Grebenshikov, is one of the most prominent members of the generation which is widely considered the "founding fathers" of Russian rock music. Due as much to his personal contribution as to the undisputed and lasting success of his main effort, the band Aquarium (active since 1972 until today), he is a household name in Russia. Grebenshchikov is colloquially known as BG (Russian: БГ) after his initials. He is often called as 'Grandfather of Russian Rock'.

Early years (1953–1979)

Boris Grebenshchikov was born on 27 November 1953 in Leningrad. He co-founded Aquarium with a childhood friend, Anatoly "George" Gunitsky, in 1972 as a post-modernistic theater-centric effort that involved poetry and music. Gunitsky provided absurdist, highly symbolic lyrics to some of BG's earliest songs.

Despite an eventual graduate degree in Applied Mathematics, Grebenshchikov had always been a voracious consumer of culture, especially music. His school-years enamorment with The Beatles eventually extended to include a deep appreciation of Bob Dylan, which slowly transformed Aquarium into a low-fi electric blues band that moonlighted in acoustic reggae. The first song he managed to play on guitar was The Beatles' "Ticket to Ride"; his first public performance, in 1973, featured him performing songs by Cat Stevens.

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