You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who were the original members of signature sound?" whose answer is Ernie Haase.
Each document should contain about 30 words, and these documents should contain useful information.

Query: original members of Signature Sound
Useful Output:

Doc 1: Artist Information. The group has traveled all over the world, offering energy, excitement and encouragement through its powerful brand of gospel music.
Doc 2: Ernie Haase & Signature Sound– The Official Video for “Gaither Medley: Loving God, Loving Each Other / The Family of God / I Am Loved
Doc 3: Ernie Haas & Signature Sound members Devin McGlamery, lead; Doug  Haase even went on to marry the daughter of original Cathedrals member George
Doc 4: Listen to music by Ernie Haase & Signature Sound on Apple Music. Find top  Signature Sound is a gospel vocal quartet led by the former Cathedrals tenor.
Doc 5: The group's lead singer is Darren Doyle, owner of the Edmonson Voice, and Dustin's older brother. While Darren is known as the local news man,