Lead Debtor:

Muzak Holdings LLC
Case No. 09-10422

Related Debtors:

Muzak Holdings Finance Corp.
Case No. 09-10424

Muzak LLC
Case No. 09-10425

Background Music Broadcasters, Inc.
Case No. 09-10426

Muzak Capital Corporation
Case No. 09-10427

MLP Environmental Music, LLC
Case No. 09-10428

Business Sound, Inc.
Case No. 09-10429

BI Acquisition, LLC
Case No. 09-10430

Muzak Finance Corp.
Case No. 09-10431

Electro-Systems Corporation
Case No. 09-10432

Audio Environments, Inc.
Case No. 09-10433

Telephone Audio Productions, Inc.
Case No. 09-10434

Vortex Sound Communications Company, Inc.
Case No. 09-10435

Muzak Houston, Inc.
Case No. 09-10437

Music Incorporated
Case No. 09-10438