Video and audio recordings of performances, lectures, and master classes from the Chamber Music Society of Lincoln Center are available on their website. Some are archived, but it looks like they have livestreams as well. I have listened to some of the lectures as podcasts.
Also from Lincoln Center, fans of the Metropolitan Opera might be excited to know that they are streaming filmed performances for free every night. The stream opens at 7:30pm is available for 23 hours. (I found this one in the New Yorker’s Goings on about Town section. Since there is obviously nothing going on about town, they have been publishing select recommendations of culture to consume online.)
For more intimate performances, check out Recital Stream, where professional musicians stream directly from their living rooms. Livestreams and archived performance (this site was set up specifically in response to COVID-19, so the archive only goes back to the beginning of April). Donations go directly to the musicians themselves. I found this on the WQXR site, which itself has a long roster of online events and performances.
Of course, don’t forget about Maine Public’s classical stream. (On the air, it broadcasts at 104.1FM.)
World Concert Hall claims to have a link to every online concert in this world. That may or not be true, but it is one way to hear live music online. (Be aware of the time zones. If they say the concert begins at 15:00 GMT, that’s 11:00am here in Maine.)
From Europe, the Berlin Philharmonic Digital Concert Hall is free for the time being, and the London Symphony Orchestra has lots on their site to view/hear, including interactive activities aimed toward kids.
If that’s not enough, there is always YouTube and Spotify.
Do you have a favorite resource to share? Feel free to comment below.