Meet our Associates
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Jeff and Martha Brooks established “A Certain Sound” in 1987 for the support of Ministers and Missions that have a burden to reach their homelands with the gospel of Jesus Christ. Over the years God has led them from the USA to Canada and then to over 25 other nations of the world with the life changing message of Jesus Christ. Jeff has a consuming passion to see God once again manifest His glorious presence in this generation.

email Jeff at:


Frank and Ruth Solorzano have been associated with Jeff’s ministry for the past 30 years and with “A Certain Sound” since its' inception. Frank and Ruth worked with Jeff at First Baptist Church in Pigeon Forge for over two years and have now returned to Central America to begin a new work. In addition to having a powerful ministry in Guatemala, they have ministry opportunities in all of Central America plus the islands of the Carribean and Spain.

You can email Frank at:


Roger and Grace Tsosie live in Shiprock, NM and minister primarily on the Navajo Reservation. The have  evangelistic tent ministry called "Shekinah Fire" and spend the summer months going from place to place on the reservation conducting evangelistic crusades. Roger also ministers in churches and in conferences.

 You can email Roger and Grace at:


Ivan Solorzano joined our list of "Associates" in July, 2018. It is our joy and pleasure to welcome him and his family: Wife, Nancey, Daughters, Mercedes and Carolina and Son, Pablo. 

Ivan is currently pastor of Tabernaculo Cristiano in Guatemala and also involved in the following ministries:

Pastor and Leadership Training, Evangelistic Preaching, Assisting with Missions Teams from USA and around the world, Serving as National Team Leader and Coordinator fro Samaritan's Purse in Guatemala.

 Ivan is the son of Frank Solorzano who has been a part of A Certain Sound from its beginning.  After God called him to ministry Ivan earned a Bachelor's Degree in Theology focused on Transcultural Missions from Dallas Theological Seminary branch in Guatemala. 

Please be in prayer for Ivan as he departs fro ministry in Peru later this month.

You can contact Ivan via email at:


Cathy R. Kreis and Jeff first met in Fiji several years ago and have been friends ever since. Cathy worked for Ambassadors for Christ International for several years before becoming Jeff’s ministry assistant at First Baptist Church in Pigeon Forge, TN. In 2005 she moved to Kingman, AZ in order to work more closely with ministry projects on the Navajo reservation, and to increase her creative writing activity. Her book, BEYOND ALL REASON: God at Work in the South Pacific, is a colorful chronicle of the 40-yr ministry of AFC Fiji/South Pacific ( In recent years her ministry outreach has expanded to touch lives in India, Israel, Fiji, Switzerland, Italy, Australia, and New Zealand.

 Cathy recently moved to Carson City, NV to live with her son. She continues her writing ministry in her new home.

email Cathy at: email Cathy at:



Glenn and Bobbie Dean became part of the ministry of “A Certain Sound” in 2003 organizing “Amazing Grace Counseling” as an arm of “A Certain Sound.” Glenn left the corporate world after several years as a software consultant and he and Bobbie are committed to “Christ Centered Counseling” and discipleship.

email Glenn and Bobbie at:



Chris Batchelor is the newest member of our team. He lives in Dallas, GA and travels wherever the Lord opens doors for him to minister. 

His primary focus has been Guatemala, working with Frank Solorzano and working in Spain with Pablo and Dulce Rodriquez.  Chris teaches and does personal Evangelism and Discipleship. 

Email Chris at:



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Pablo and Dulce (Sweet Ruth) Rodriguez are pastoring an Evangelical church in Vic, Spain.  Please keep these two precious ones in your prayers as they seek to build up the church in Spain. 

You can contact Pablo  at: pablo_4you@hotmail  or  Dulce at: 


 John Paul lives in Chenmai, India and ministers primarily in India and several African nations. He is actively involved in training pastors and church leaders, as well as conducting evangelistic crusades. John has been a faithful servant of the Lord for many years. ACS is honored to welcome John as one of our "Associate Ministers."

You may email John at: 


 Dr. Amy Rosine and her husband, Doug, joined ACS in 2015 and specialize in conducting Medical Crusades in Central America and wherever the Lord opens doors for them. They have 3 beautiful daughters who assist in the crusades. Dr. Amy has a family medical practice here in Knoxville. This precious family stands ready to serve the Lord wherever and whenever He calls.

You may email Dr. Amy at:


Feel free to contact any of our ministers.