Audio mixing (recorded music) in the context of Mastering (audio)

A record producer or music producer is a music-creating project's overall supervisor whose responsibilities can involve a range of creative and technical leadership roles. Typically the job involves hands-on oversight of recording sessions; ensuring artists deliver acceptable and quality performances, supervising the technical engineering of the recording, and coordinating the production team and process. The producer's involvement in a musical project can vary in depth and scope. Sometimes in popular genres the producer may create the recording's entire sound and structure. However, in classical music recording, for example, the producer serves as more of a liaison between the conductor and the engineering team. The role is often likened to that of a film director, though there are important differences. It is distinct from the role of an executive producer, who is mostly involved in the recording project on an administrative level, and from the audio engineer who operates the recording technology.

Varying by project, the producer may or may not choose all of the artists. If employing only synthesized or sampled instrumentation, the producer may be the sole artist. Conversely, some artists do their own production. Some producers are their own engineers, operating the technology across the project: preproduction, recording, mixing, and mastering. Record producers' precursors were "A&R men", who likewise could blend entrepreneurial, creative, and technical roles, but often exercised scant creative influence, as record production still focused, into the 1950s, on simply improving the record's sonic match to the artists' own live performance.

A mixing console or mixing desk is an electronic device for mixing audio signals, used in sound recording and reproduction and sound reinforcement systems. Inputs to the console include microphones, signals from electric or electronic instruments, or recorded sounds. Mixers may control analog or digital signals. The modified signals are summed to produce the combined output signals, which can then be broadcast, amplified through a sound reinforcement system or recorded.

Mixing consoles are used for applications including recording studios, public address systems, sound reinforcement systems, nightclubs, broadcasting, and post-production. A typical, simple application combines signals from microphones on stage into an amplifier that drives one set of loudspeakers for the audience. A DJ mixer may have only two channels, for mixing two record players. A coffeehouse's small stage might only have a six-channel mixer, enough for two singer-guitarists and a percussionist. A nightclub stage's mixer for rock music shows may have 24 channels for mixing the signals from a rhythm section, lead guitar and several vocalists. A mixing console in a professional recording studio may have as many as 96 channels. Consoles used for live sound can go even higher, with some having up to 384 input channels.

A remix, also sometimes called reorchestration or rework, is a piece of media which has been altered or contorted from its original state by adding, removing, or changing pieces of the item. A song, piece of artwork, book, poem, or photograph can be remixes. The only characteristic of a remix is that it appropriates and changes other materials to create something new.

Most commonly, remixes are a subset of audio mixing in music and song recordings. Songs may be remixed for a variety of reasons:

Mastering is a form of audio post production which is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device called a master recording, the source from which all copies will be produced (via methods such as pressing, duplication or replication). In recent years, digital masters have become usual, although analog masters—such as audio tapes—are still being used by the manufacturing industry, particularly by a few engineers who specialize in analog mastering.

Mastering requires critical listening; however, software tools exist to facilitate the process. Results depend upon the intent of the engineer, their skills, the accuracy of the speaker monitors, and the listening environment. Mastering engineers often apply equalization and dynamic range compression in order to optimize sound translation on all playback systems. It is standard practice to make a copy of a master recording—known as a safety copy—in case the master is lost, damaged or stolen.