Video game music

Video game music, often called VGM, is the specialized soundtrack that accompanies digital interactive media. It serves many roles, playing during title screens, menus, and active gameplay. Beyond mere background noise, VGM can be dynamic. This means the music reacts to a player's specific actions or environmental situations. For example, rhythm games might use audio cues to indicate missed notes. Other games might change the music to signal danger or reward a player for a specific achievement. This music can be original compositions or licensed tracks, such as public domain folk songs.

The creation of VGM relies on converting computer code into audible sound waves. In the early era, music was stored on physical analog media like cassette tapes or phonograph records. However, these were expensive and fragile, making them difficult to use inside arcade cabinets. Instead, developers used digital methods. A specific computer chip would take electrical impulses from the game's code and transform them into analog sound waves for a speaker. This process also generated sound effects. Early systems were often monophonic, meaning they could only play one note at a time. This led to music being used sparingly, such as between levels or at the start of a game.

As technology advanced, the complexity of these sounds grew through different stages of synthesis. Early systems, like the Atari 2600, were extremely limited and could generate only two tones at once. This constraint helped create the chiptune style, which is characterized by the distinct electronic sounds of these early chips. Later, arcade machines used the Motorola 68000 CPU alongside Yamaha YM programmable sound generator chips. These allowed for many more "channels," or simultaneous tones, sometimes reaching eight or more. The Japanese Famicom, released in 1983, offered five channels, including one capable of simple Pulse Code Modulation (PCM) sampled sound.

Technological breakthroughs like FM synthesis and sampling changed the texture of game audio. Frequency Modulation (FM) synthesis, developed by Yamaha, allowed developers to manipulate tones to have different characteristics. This produced a "warm and pleasant" sound that was highly regarded by musicians. In 1985, the Amiga computer introduced digital signal processing through sampling. Sampling involves taking a short clip of a real sound and playing it back from memory. This offered a level of authenticity and complexity that FM simulation could not match. However, sampling required significant amounts of data. Because memory was very expensive at the time, many developers preferred sequenced sound chip music, which used simple code and required much less memory.

The history of VGM is marked by specific milestones in how music interacts with play. In 1978, Taito's Space Invaders featured a loop of four descending chromatic bass notes that increased in pace as enemies descended. By 1980, Namco's Rally-X became the first game to feature a continuous, melodic background tune. Konami's 1981 game Frogger introduced a more complex dynamic approach by using eleven different gameplay tracks. These tracks changed based on the player's actions. In 1982, Namco's Dig Dug took this further by stopping the music entirely when the player stopped moving.

This evolution led to the rise of professional composers who treated VGM as a serious art form. Many of these individuals became famous for their ability to work within technical constraints. Notable names include Koji Kondo, known for Super Mario Bros., and Nobuo Uematsu, famous for Final Fantasy. Other influential composers include Yuzo Koshiro, who used the Sega Genesis hardware to create advanced techno-style compositions, and Hirokazu Tanaka. The quality of these compositions improved so much that by the mid-1980s, music was being developed by people with significant musical experience. The industry even began recognizing this skill through awards, such as the Golden Joystick Awards, which added a Best Soundtrack category in 1986.

Today, the impact of video game music extends far beyond the console. The popularity of these soundtracks has created new education and job opportunities. VGM is now a commercial product, with soundtracks sold as albums and performed in live concerts. The transition from simple tone generation to complex hybrid systems involving both samples and FM synthesis has allowed the medium to flourish. What began as simple, looped beeps has transformed into a massive field of musical study and professional employment.