Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Highly professional, but lacking in passion

The presence of a Russian virtuoso like Yefim Bronfman should have guaranteed genuine Slavic passion in the great Tchaikovsky Piano Trio, but Bronfman has increasingly been playing it safe. What is this tendency for star musicians in this country like Perlman, Ax, Midori, and now Bronfman to rest on their laurels? Comparison to the impassioned live performance from Argerich-Kremer-Maisky on DG makes this version of the Tchaikovsky sound half asleep.Naturally the playing is altogether professional, and Sony has provided adequate sonics (though not a patch on the riveting DG sound). However, without total commitment on everyone's part, the Tchaikovsky Trio suffers from sprawl and waywardness, as it does here form time to time. In all, a good performance that misses the mrk for being something really special.