Mawamba Dub (Chpt 2) instrument question

[digitalJ]

The lp I'm referring to is this [cover=4693,3703] , at

http://www.roots-archives.com/release/3703#rel3665

On two of the tracks ,Dee Keh Dee (Tears) and Hah Bee Bah (Beloved) , there's a very prominent wind instrument(s) that rides both tracks from beginning to end.
What instrument is that?

[Bellyman]

Lead instrument on both tracks is a synthesizer.

[digitalJ]

Lead instrument on both tracks is a synthesizer.

Thanks Bellyman.I suspected it was but then what wind instrument is the synthesizer mimicking?

[Bellyman]

With the tuning pitched that high I can't recall any natural wind instrument reaching these registers.

Maybe a flute or a penny-whistle has the same sounds in lower registers. For me these sounds have no resemblance to any known instrument, sorry.