Fieva, yes, I listen primarily to rock-oriented music, and I think the paradigm in that form is that of a band that's capable of performing live most anything that they commit to in the studio. Not 100% true I know, but it's the benchmark, I think.
So a beat can be anything from a percussion track to a fully-produced platform ready for vocals. Very interesting.
It reminds me of an interview I heard last week with two of the members of the three-man songwriting team (Holland-Dozier-Holland) that were responsible for a lot of Motown hits during its heyday in the '60s. Their songs would be targeting a specific group - The Supremes, The Four Tops, The Isley Brothers, etc. The two guys responsible for the music would go from concept to actually having the song tracked in the studio - along with a melody line - before they handed it off to the lyricist. The lyricist wrote the words, and then they would hand the complete package to the singing group. I hadn't been aware that the songs were packaged this way.
Sounds to me like a similar thing with beats, minus the lyrics.
Thanks, MadAudio and Fieva, for the info.