Soundcheck
2pm on WNYC 93.9FM

A September Requiem: Earlier this year, the New York Philharmonic commissioned American composer John Adams to create a musical memorial in honor of September 11 victims. On Tuesday’s program, a conversation with the composer himself, about why he was selected for this high-profile commission, his sources of musical inspiration, and choosing texts for the commemorative work, entitled On the Transmigration of Souls. Plus, Host John Schaefer examines some of Adams’ most politically and emotionally charged compositions, including Nixon In China and The Death of Klinghoffer.

Radio Lab
2pm on WNYC AM 820
This special edition of Radio Lab will present a handpicked selection of short radio works that deal with a wide range of 9/11-related ideas, emotions and experiences. For instance, listeners will hear stories about a Staten Island tattoo parlor that has completed over 200 commemorative works for city workers and their families, an examination of the Marketing of Patriotism and a very moving collage of children saying, debating and analyzing the Pledge of Allegiance.

The Unfriendly Skies
8-9pm on WNYC AM 820

Logan Airport in Boston, where most 9/11 hijackers began their journeys, is the starting point for this documentary on airport security and how it feels to fly a year after the tragedy. For most, the skies are now neither friendly nor dramatically more secure. Listeners will hear stories at both ends of the new security measures - from those responsible for implementing them to those who must submit to the measures. Anthony Brooks looks at the hurdles and headaches frequent flyers face, from airport screeners to security equipment to new airport procedures; Fred Thys reports on those responsible for keeping American airports and skies safe, both the people and organizations; and Michael Goldfarb examines the view from the air, listening to flight staff and looking at how airports and airlines outside the US handle security following 9/11. [Produced by WBUR, Boston.]

Live From Merkin Concert Hall
7:30pm on 93.9 FM
The 9/11 anniversary music activities get underway at Merkin Concert Hall with a program featuring the Guarneri Quartet, Juilliard Quartet, Shanghai Quartet, and Musique sans Frontières, a new ensemble comprised primarily of middle-eastern musicians, who will present a mixed program under the aegis of Musicians for Harmony. Highlights of the program include the Juilliard performing Bartok's String Quartet No. 6 and a new work by Egyptian singer/composer Kamel Boutros, for voice, piano, and violin. Merkin and the musicians have donated their services.

Thanks to Fred Froehlich for the use of his photos.