It's here, it's there — it's almost everywhere. Chamber music, the voice of a classical summer, is issuing from all points of the compass. The North End hosts the Seattle Chamber Music Society's Summer Festival at Lakeside School, tonight through the end of the month. Across the Hood Canal Bridge to the west, the Olympic Music Festival continues its weekend concerts with a dose of Beethoven (2 p.m. tomorrow and Sunday; 206-527-8839).

And up in the Cascades near Leavenworth, the Icicle Creek Chamber Music Festival offers two performances of a program called "Visions and Revisions," with works recast either by their own composers or by later ones (in the former category is the Brahms Op. 8 Piano Trio). Among the musicians: noted cellist Nathaniel Rosen and the Icicle Creek Piano Trio. Start times are 7:30 p.m. tomorrow, 2 p.m. Sunday; call 877-265-6026 or visit www.icicle.org.

Here at home, the Seattle Chamber Music Society's Summer Festival at Lakeside School starts off tonight's concert with a 7 p.m. recital by the highly regarded violinist Carmit Zori (recently in town for the American String Project concerts), with pianist Jeremy Denk. They'll play works of Schubert, Schumann and Kreisler ("La Gitana").

The two will be joined in the 8 p.m. main concert by such artists as Amos Yang (cello), Ani Kavafian (violin) and Geraldine Walther (viola) for quartets of Schubert and Brahms. Finally comes one of the most treasured works of the 20th-century chamber repertoire, Olivier Messiaen's "Quartet for the End of Time," with Frank Kowalsky (clarinet), Mark Kaplan (violin), Ronald Thomas (cello) and pianist Yael Weiss. Tickets are in short supply.

Next week, the festival continues its Monday-Wednesday-Friday format at Lakeside School. Violinist Anne Akiko Meyers joins the ensembles for works of Strauss (Piano Quartet on Monday), Mendelssohn (a trio, on Wednesday) and Janácek (a violin sonata with Adam Neiman, pianist, next Friday).

The festival Web site (www.scmf.org) notes "limited seating" for many concerts, and the venue is small, so sellouts are frequent. Try the Web site or the ticket phone (206-283-8808) for tickets.

Planning ahead

Some unusual chances to learn, as well as listen, crop up later this month. The Tallis Scholars, a noted English choral group, presents its first summer school in Seattle July 24-30, with its venerable conductor Peter Phillips. There will be public concerts as well as a course that includes rehearsals, individual voice tuition and singing opportunities; for details on the course, hosted by Seattle's Tudor Choir (Doug Fullington, director), visit www.tsss.uk.com or e-mail href="mailto:juliet.allan@tsss.uk.com">juliet.allan@tsss.uk.com. Also check out the Tudor Choir Web site, www.tudorchoir.org.

In August, the Accademia d'Amore (a workshop for the performance of opera scenes from the 17th century) moves to Seattle from the Hochschule für Künste in Bremen, with Seattle native lutenist Stephen Stubbs as director. (Visit www.earlymusicguild.org/emg/education/nwcem_work.html">www.earlymusicguild.org/emg/education/nwcem_work.html for details.) The Aug. 15-20 workshop, based at Seattle Pacific University, is for advanced singers and continuo players (keyboards, harps, lutes, bowed bass) who want an opportunity to work with a faculty of specialists on all the musical and dramatic aspects of the 17th-century opera repertoire.

A parallel string workshop will be conducted by Ingrid Matthews and Margriet Tindemans, both well-known, Northwest-based performers, with master classes, ensembles, improvisation and continuo classes. The workshop will conclude with a public performance of the scenes studied during the week.

For information, visit the sponsoring Early Music Guild Web site (www.earlymusicguild.org) or call 206-325-7066.