Once again, Hans Vonk and the St. Louis Symphony surprise and surpass all of my expectations: this is a truly decent Mahler 4, with an outstanding vocal contribution from Esther Heideman. She has a fresh, innocent sounding voice - with no audible strain - yet doesn't sound the least bit affected, or as though she's making parody on the naivete of children. She's the real deal - the best I've heard in a long, long time. Michaele Kaune comes closest (Macal/Czech Phil./Exton). As for the rest of it, it's quite good.
The first movement is particularly good, where Hans Vonk, like Abbado, employs a lot of rubato and contrasting tempi. Woodwinds sound very forward, and the triangle - a part that's far more prominent than you might imagine - is audible throughout as well. The horns are excellent, although the SLSO trumpets are sometimes just a tad too bright and pointed sounding for my taste (pretty typical for American trumpet players, though). Still, this is a small complaint at best. How are the trombones, you ask? . . . fooled you! - there are no trombones in the 4th. The high strings are mostly very good, and the lower strings register throughout, but without sounding too heavy either. Good stuff.
The second movement is a tad slow from my taste, but everything in it is well characterized. I just happen to buy into Roger Norrington's argument that Mahler meant for the scherzo to be conducted one beat to the bar (instead of three beats to the bar). His scherzo makes a lot of sense to me. Anyway, the slow movement goes quite well too. Although, at the movement's climax, the famous "crash; boom" effect (cymbals/bass drum) is slightly undermined by a bass drum that sounds a bit too small, and is curiously underplayed. It really almost sounds more like timpani there. Again, this is a rather minor complaint.
All in all, this is quite good - another sleeper in this Vonk/SLSO series. I wouldn't rate it higher than the Macal/Czech Phil. M4, simply because Exton has provided such outstanding sound quality. Also, Kaune is nearly the equal of Heideman (and both are vastly superior to either of Vaclav Neumann's sopranos in M4). And like Hans Vonk, Macal treats the 4th as primarily a "neo-classical" work by Mahler; far more influenced by Bruno Walter than Klemperer or Mengelberg. But still, you could do far worse than making Hans Vonk your one and only recording of Mahler 4.