Executive Directors

For the past 30 years, Ms. Messing has worked in the arts field. Her career has included work as a Registered Music Therapist and Creative Arts Manager, as a music educator and as an oboist. Prior experience includes arts program development and implementation for children, seniors, at risk adolescents, acute care hospital and rehab patients. For the past 15 years, she has focused on enhancing the arts of North East Tarrant County, first with Art in the Square and the Southlake Arts Council,  more recently as co-founder and Chairman of the Apex Arts League.

Ms. Messing has a Bachelor and Masters degree in music.  She and her husband Mark have 2 children working as professional musicians. She performs with the Northeast Orchestra, the New Philharmonic Orchestra of Irving and has begun to dabble with paint.

apexarts_biopic_tmcmillanTamara has been a resident of Southlake for 24 years.  She spent a 30 year career in the mortgage banking industry and has been retired since 2011.   Since that time she has expanded her involvement as a community volunteer.  Tamara is a past director of the Bob Jones Nature Center Organization where she chaired and co-chaired a number of very successful fundraising events. She currently serves on the Southlake Parks  Development Corporation, the Southlake Arts Council and the Southlake Historical Society.  She also is president of Nature Reach, a newly created nonprofit organization based in Southlake.
Tamara is a past member of the Southlake Community Choir and has served as a volunteer for the Southlake Community Band. She is an alumna of the University of South Florida, where she met her husband Ken.

Ken McMillan has been involved with the arts in Southlake for more than two decades. He is a founding member of the Southlake Community Band, where he has served in various leadership positions, including President. He also served as a member of the Apex Arts League advisory board for several years prior to joining the executive board as the League’s Treasurer.

Since moving to Southlake, Ken has built a history of service to the community. He is an appointed member of the Southlake Crime Control and Prevention District Board. He is a volunteer for the Department of Public Safety and regularly volunteers to assist other local non-profit groups. He also has held leadership positions with other local organizations, including president of the Mission Hill Estates Homeowners Association and president of the Northeast Tarrant Amateur Radio Club.

Ken has a Degree in Electrical Engineering from the University of South Florida in Tampa. He is retired after a long career with Verizon Communications, where he served in various executive positions in domestic and international network operations. He and his wife Tamara have lived in Southlake for over twenty years


Becky serves the Apex Arts League as a member of the Executive Board. Ms. Miltenberger has both a musical and legal background, and advises the Executive Board in both areas. She has served on the Executive Board of Apex for over six years.

Ms. Miltenberger is a classically trained pianist and received her Bachelor of Fine Arts from the University of Missouri, where she studied under Van Cliburn Silver Medalist, Santiago Rodriguez. After college, Ms. Miltenberger returned to the University of Missouri for her law degree and graduated with honors from that institution.  Ms. Miltenberger has practiced in the areas of Corporate Law, Education Law and Employment and General Litigation.  She has represented private and governmental entities in organization and planning and has advised such clients regarding administrative and regulatory requirements to which they are subject.

In the past decade, Ms. Miltenberger has served her community of Southlake by election to the Carroll Independent School District Board of Trustees, where as Vice President, she presided over districting, financial, student rights and personnel issues as well as numerous policy and regulation revisions.  Currently, Ms. Miltenberger serves the school district as coordinator of the Apex annual jazz festival, in which the Carroll Jazz Orchestra participates.

Ms. Miltenberger and her husband, Chris, have three children who participated in the music programs in Carroll ISD, who graduated from Carroll Senior High School, and who now live across the country. The Miltenbergers support the arts in Northeast Tarrant County and work to contribute to Apex Arts League’s Mission whenever possible.

apexarts_biopic_aclugston  Andrew Clugston is an Associate Vice President with Morgan Stanley. Andrew acquired his BA (Honors) from Bucknell University, and his JD from University of Melbourne, Australia. Andrew practiced as a capital markets lawyer with White & Case in London, England. He advised on over $9 billion in security offerings and programs, including the first ever Ukrainian Loan Participation Note program and a US$2.25 billion IPO for an Indian real estate company – the largest Indian public offering at that time. He currently does not provide legal advice. 

An enthusiastic musician, Andrew began playing the violin at seven and undertook his formative studies in Geneva, Switzerland. He currently serves as first chair of the White’s Chapel Orchestra and as violinist with the dynamic chamber ensemble, Versa Strings. Andrew and his wife, Kara moved to Texas in 2009 and are actively engaged in the Suzuki Music Institute of Dallas community, where their eldest daughter is learning the cello.

Andrew D. Clugston
AVP, Morgan Stanley
apexarts_biopic_cmorrisCarolyn Morris is serving her third term on the City Council of Southlake, Texas. In her role as a City Council member she currently serves on the Southlake 2030 Planning Committee, the Tax Increment Reinvestment Zone Committee, the Southlake Parks Development Corporation, and the Southlake Arts Council. She is a founding member of the Apex Arts League and the Southlake Department of Public Safety Citizens Association, and she is Past Director and President of the Dominion Homeowners Association. Ms. Morris has also served on the Board of Directors for the Bob Jones Nature Center, has served youngsters at Rockenbaugh and Old Union Elementary Schools as a member of the Grandfriends Program, is a graduate of the Southlake DPS Citizens’ Academy, and is Coordinator of the North Texas Chapter of the Polycystic Kidney Disease (PKD) Foundation.

Ms. Morris holds the Bachelor and Master of Science degrees from Henderson State University, and a Doctorate of Education degree from Texas Women’s University. She was a professional educator for 33 years, and holds a Texas Real Estate Broker’s license. Carolyn has been a Southlake resident for 18 years, and she and her husband Tom enjoy four daughters and five grandchildren.