Mixing is the process of combining multiple audio tracks into a single, cohesive recording. It involves adjusting the levels, panning, and EQ of each track, as well as adding effects such as reverb and delay.

EQing is the process of boosting or cutting specific frequencies in an audio signal. This can be used to correct for imbalances in the frequency response of a track, to add emphasis to certain instruments or vocals, or to create special effects.

Compression is the process of reducing the dynamic range of an audio signal. This can be used to make a track sound louder and more consistent, or to control the level of peaks and transients.

Reverb is the process of adding a sense of space to an audio signal. This can be used to simulate the natural reverberation of a room, or to create special effects such as echoes and delays.

Delay is the process of delaying an audio signal by a specific amount of time. This can be used to create echoes, delays, and other special effects.

Panning is the process of positioning a track in the stereo field. This can be used to create a sense of space and depth in a mix, or to isolate certain instruments or vocals.

Mastering is the process of preparing a recording for distribution. This involves making final adjustments to the levels, panning, and EQ of each track, as well as adding effects such as limiting and compression.

Mixing is done before mastering, mixing involves combining multiple audio tracks into a single recording, mixing is done by the recording engineer, and mastering is done by the mastering engineer.

EQing, compression, reverb, delay, and panning are all common mixing techniques.

EQing, compression, limiting, normalization, and dithering are all common mastering techniques.

A mixing engineer works on the individual tracks of a recording, a mixing engineer is responsible for the overall sound of a recording, a mixing engineer typically has a background in music production, and a mastering engineer typically has a background in audio engineering.

Balancing the levels of the individual tracks, creating a cohesive and consistent sound, dealing with difficult or problematic tracks, and keeping up with the latest trends and technologies are all challenges of mixing and mastering.

Hearing your work on the radio or in a movie, getting paid to do what you love, working with talented musicians and producers, and making a difference in the world are all rewards of mixing and mastering.

Reading books and articles, watching tutorials and videos, experimenting with different techniques, and working with a mentor or teacher are all great ways to learn about mixing and mastering.

A good ear for music, technical skills and knowledge, creativity and imagination, and patience and perseverance are all important qualities of a successful mixing and mastering engineer.