This is truly a week for chamber music in all shapes and sizes.

Monday
The Momenta Quartet, currently in residence at Temple University, presents a Philadelphia premiere by Martin Bresnick, plus world premieres by Richard Brodhead and Maurice Wright.
Rock Hall Auditorium, Temple University; 7:30 PM; FREE

Tuesday
The newly-formed Curtis-based baroque trio La Mela di Newton gives its debut performance with works by Castello, Handel, Frescobaldi, and Rameau.
Field Concert Hall (Curtis Institute of Music); 8 PM; FREE

Wednesday
Any Beethoven fans out there should check out the Bulgarian State Academic Orchestra's all-Beethoven program at Penn, including the third Leonore Overture and the 8th Symphony.
Irvine Auditorium (University of Pennsylvania); 7:30 PM; $19-$42

Two pianos are always better than one, right? Temple piano professors Charles Abramovic and Bill Cunliffe will play works by Debussy, Poulenc, Gershwin, and the premiere of Matthew Greenbaum’s “Amphibian” for two pianos.
Rock Hall Auditorium (Temple University); 7:30 PM; FREE

Friday
Local quartet Liebesfreud presents a program of Bach Mendelssohn and others as part of their "Last Fridays" series.
Philadelphia Ethical Society (1906 S. Rittenhouse Square); 5:15 PM; FREE

The AVA begins their winter season with Pennsylvania native Samuel Barber's Vanessa, a Gothic tale with libretto by fellow Curtis alum, Gian-Carlo Menotti.
Helen Corning Warden Theater (19th and Spruce); 7:30 PM (Feb 25 @ 2:30 PM); $48

Renaissance group Piffaro presents "Sweet Pipes," a program dedicated to the dulcet sounds and the richness and versatility of the recorder in its myriad forms and sizes from late medieval through the early Baroque periods. Also featured will be Piffaro’s plucked strings, double reeds and brass as supporting characters.
St. Mark’s Church (1625 Locust Street); 8 PM; $20

Saturday
Feel like you've seen everything? Off-the-beaten-track is the Wagner Free Institute of Science's "The Order of Things," featuring a world premiere piece by British sound artist Scanner as part of the exhibit on Swedish scientist Carolus Linnaeus, the father of modern taxonomy. This electro-acoustic installation explores various ideas of order, from the private sphere to the vast domain of the natural world, as they relate to the legacy of Linnaeus. We know we're intrigued.
Wagner Free Institute of Science (1700 West Montgomery Avenue); 3 PM (Sunday as well); $30

Singing City's Winter Concert is a tribute to its quest for lifelong learning. Following a workshop with area youth choirs, these youth choirs will join Singing City in Rutter's Mass of the Children and the presentation of the 2007 Singing City Prize for Young Composers.
First Baptist Church (17th & Sansom Streets); 7 PM; $18

There's still one last performance of the Opera Company of Philadelphia's Porgy & Bess to go. Catch this while you can.
Academy of Music (Broad and Locust); 8 PM; $6-$16 (only Limited View seats available)

Sunday
Looking for signs of spring? Ignat Solzhenitsyn conducts the Chamber Orchestra of Philadelphia in Vivaldi's The Four Seasons and Mendelssohn's Swiss Symphony.
Perelman Theater, Kimmel Center; 2:30 PM; $24-$62

The Astral Artistic Services' groups are really starting to make a name for themselves in the Philly area. The Koryo String Quartet joins Koji Attwood, piano, and Leslie Johnson, Mezzo-soprano in an afternoon of various chamber combinations, including works by Respighi, Rossini, and Scarlatti.
Trinity Center for Urban Life (22nd and Spruce); 3 PM; $16

Photo by Peter Checchia via astralartisticservices.org