Here is a growing list of links I visit (almost) on a daily basis.
- Claude Debussy: Sonata for Flute, Viola and Harp
- Leopold Godowsky: Java Suite
- Erich Wolfgang Korngold: Piano concerto for the left hand
- Gustav Mahler: Symphony No. 6
- Ottorino Respighi: Pines of Rome
- Alexander Scriabin: Symphony No. 4 "The Poem of Ecstasy"
- Ralph Vaughan Williams: Symphony No. 3 "A Pastoral Symphony"
- Tommaso Castellani's notes on spin-glass
- David Tong's notes on physics
- Nahre Sol's channel
- Terrence Tao's blog
- Two minute papers
- Thomas Zaslavsky's bibliography of signed-graph theory