[spicyjpeg]

I have noticed that it's fairly common for many songs to feature random car sounds in their YouTube mixes, but not in the final masters that end up on iTunes and streaming services. It is also relatively common to have "watermarks" (e.g. additional short vocal clips at the beginning and end) added to the YT/Soundcloud mix, presumably to make it easier to figure out if a DJ just ripped the song off YT.

[hnlmorg]

Music videos will often have different versions of the song with added sound effects, a more cinematic intro and outro, and even breaks in the song for a dramatic sequence. These flourishes make sense when you have a video but wouldn’t make any sense in purely audio context.