This Warner Apex CD was released in 2003 and contains a performance of Grieg's well-known piano concerto from 1985/86 and of his little-known symphony from 2000. It's certainly worth adding to your collection, especially for the symphony.
I think I'm right in saying that the Erato recording of the piano concerto has not appeared on CD before. The pianist is that interesting Frenchman Francois-Rene Duchable who made a few recordings of Chopin, Liszt, and others for Erato and EMI and then retired from the recording industry for some years, only reappearing recently. To be frank, this recording isn't the greatest of the Grieg concerto. That's not really down to the pianist, but more due to the Orchestre Philharmonique de Strasbourg under Theodor Guschlbauer. It all sounds a little bit uninterested. Best off with Kovacevich, either on the Newton Classics re-release Grieg/ Schumann: Piano Concertos or the orignial Philips release Schumann and Grieg Piano Concertos: Kovacevich, Kocsis.
The performance of Grieg's only symphony is, however, very good. Grieg withdrew this symphony not long after he wrote it and is wasn't until 1980 it was heard again. There are a few other recordings, but this one by the Norwegian Radio Orchestra under Ari Rasilainen is just fine, especially at Apex price. The symphony is very North European sounding and if you like Schumann, you are likely to like this piece. This recording originally appeared on a short-lived Finlandia recording Grieg - Symphony; Symphonic Dances with a different coupling.