I will master your song to industry standards

No! Each song is manually processed without ever using any sort of presets, automatic settings or ai tools. However, if you made a song using ai, I can still improve the Quality / EQ Tone

I do indeed offer both mixing and mastering! The basic ($10) & standard ($15) services apply to mastering one final file only, whereas the $50 premium service entails a full mix and master of your separated stems / file track outs with creative effects and pitch correction applied.

Mastering is a form of post-production, the final step that ensures your songs are the best they can be before you distribute them. Think of it as the final process that adds punch, clarity, warmth & competitive loudness. It differs from mixing in that we only use the final song file; no stems

Audio mixing is the process by which multiple sounds are combined into one or more channels. In the process, the separate mixer tracks or "stems" are leveled and individual effects such as EQ, Compression, De-Essing, Reverb, etc is applied to each individual instrument and vocal.

The short answer is that "stems" are mainly the separate channels/tracks within your audio program/DAW. For example, the lead vocal, bass, kick, snare, synth, etc. are all on separate tracks and you'd export them as their own WAV file instead of just the final song as one complete file.