A standard 45 RPM record typically features two songs.
A 45, commonly known as a 7-inch single, is a distinct vinyl format primarily designed for releasing individual musical tracks. These records are engineered to spin at 45 revolutions per minute (RPM) and are structured to hold one track on each of their two sides.
Understanding the 45 RPM Single Format
The two-sided design means that a 45 record has a distinct "A-side" and "B-side." The A-side traditionally features the primary track intended for promotion, often a band's latest hit single. The B-side, sometimes referred to as the "flip side," usually contains a different song. This secondary track could be:
- An album track not chosen as a single.
- A non-album track or an exclusive B-side.
- An instrumental version or an alternative mix of the A-side track.
This format became incredibly popular for its focus on single releases, making it easy for consumers to purchase specific popular songs without needing to buy an entire album.
Vinyl Record Formats Compared
While the 45 is known for its two-song standard, other vinyl formats accommodate different numbers of tracks:
| Record Type | Diameter (inches) | Typical RPM | Standard Song Count | Primary Use |
|---|---|---|---|---|
| 45 RPM Single | 7 | 45 | 2 | Individual hit singles |
| LP (Album) | 12 | 33 1/3 | 8-12+ | Full-length studio albums |
| EP | 7, 10, or 12 | 33 1/3 or 45 | 3-6 | Extended play, short collections |
Key Characteristics of a 45 RPM Single
- Size: Most 45s are 7 inches in diameter, making them highly portable and easy to manage.
- Speed: They are specifically designed to be played at 45 RPM, requiring a turntable with this speed setting.
- Purpose: Their primary role is to serve as singles, providing a concise listening experience focused on one or two key tracks.
- Center Hole: Many 45s feature a large center hole, originally designed for compatibility with jukeboxes, requiring a special adapter (often called a "spider") to play on home turntables.
To learn more about how singles fit into music history, you can explore information about music singles.
