There are certainly different versions of Hit the Ground Running:
The EP version was released on CD with length 2:53 (net length without pregap before the following track), a confirmed acoustID and ISRC
DEVQ71600003 (from subchannel)
The Single version, currently offered by Spotify and Amazon, is also included in their album download, but it’s certainly a different version, length 2:44, audible different and clearly missing the first 8 seconds.
The single version is very likely the same mix included in some compilation albums. I have compared fingerprints of my CD with those of the compilation, and it is definitely a not similar enough to be the same. So I voted aginst a merge into the recording associated with my CD. But this recording also includes a version length 2:44 and digital download versions referenced by Spotify’s (since February 3, 2017) and Amazon’s download version, length 2:44.
On the other hand, the MP3 Single on Discogs has a length of 2:52, nonetheless the above Amazon link was also given as reference. Now, which version of “Hit the Ground Running” was released on Aug 4, 2017 on Amazon/Discogs?
There is also a second AcoustID associated to “my recording”, obviously similar in parts at an offset of 32 - the similarity starts after some seconds - and I looked at the music video → Alice Merton - Hit the Ground Running - YouTube with some seconds ahead and many additional sounds mixed in but is basically my CD/EP version. … t̶h̶i̶s̶ ̶s̶u̶s̶p̶i̶c̶i̶o̶n̶ ̶h̶a̶s̶ ̶t̶o̶ ̶b̶e̶ ̶c̶h̶e̶c̶k̶e̶d̶…
EDIT: this is the AcoustID for the video, now created: Video “Hit the Ground Running” by Alice Merton - MusicBrainz with a fingerprint for this ID submitted
[There is also a number of live performances all using the same programmed drum computer (possibly similar in parts, even if “acoustic versions”).]
And to make it even more complicated I found out by ISRC Search that the “Single version” - length 2:44, but same ISRC - is actually part of the EP, but that’s certainly not true for my CD. Now I’m a little stuck.
EDIT2: Waveforms of first 10 seconds of the Spotify single version compared with synced CD-EP version: