Olivaceous Warbler or Reed Warbler (1 Viewer)

June 17th 2020, an Eastern Olivaceous Warbler was caught and ringed at Gedser, the southernmost point in Denmark (2nd record in Denmark following the first at exactly the same spot in June 2003).

Photo of the bird here:
https://www.gedserfuglestation.dk/blog?post_id=1004

During the afternoon I recorded a short snatch of song that I initially thought was a Reed Warbler:
https://www.xeno-canto.org/570924

I would here if anyone could comment on to the identification of the bird in the recording.

The EOW was refound later in the evening from the same bushes where the recording was made:
https://dofbasen.dk/popobs.php?obsid=25087479&obs=obs

Best regards,
Andreas

the recording is a bit too short to listen to the typical cyclic repetition but there is something in this sequence that sounds indeed like the "acoustic garland" within EOW song. still, many sound distortions and quite similar to reed warbler, so i wouldn't put my money on it.