Works I've enjoyed of late..

Tchaikovsky's piano concerto #1 (the one and only)

Mendelssohn's violin concerto in E minor

Rachmaninov's piano concerto #1, #2 and #4

Sibelius' "Swan of Tuonela" (VERY tranquil and harmonic)

Vivaldi's "Four seasons" by Anne-Sophie Mütter

Brahms' Academic Festival Overture