Zatten was commissioned in 2005 by Trumpeter Paul Neebe during the composer's vacation to do ancestral research in the town of Zatten, currently part of Poland.

Roger Petrich writes the following about his Zatten Concerto for Trumpet:

"The 'DNA' of this compostion tracks back to my great-grandfather and the tiny Plattdeutsch village where he was born. Zatten, [then] located in the eastern part of Berlin/Brandenburg is in an area of forest and small farms dating back to the 1600's. My grandfather R. T. Petrich, whose initials I bear, was six years old when he, along with his parents, sister, and older brother left Prussia to start a new life in the USA.

My own childhood memories include many visits to the family homestead in Dakota Territory, where I used to play in the barn which hosted many summer dances. The Dakota sky was vast by day, and nights could become magical with the addition of the Northern Lights. Though not a professional musician, my father kept up his trumpet playing all his life. In a special way it was his "voice" - a sound that deeply imprinted all my growing up years. All of this is mixed together in my Zatten Concerto"

The Zatten Concerto is in three movements, the two outer movements faster and the middle is a Largo. This work is written for Trumpet in C and is appropriate for advanced performers.

The title Zatten (the name of the small village in Germany where his family was located before immigrating to the USA) is spelled out in Morse Code in the very opening eight bars of the work. The Concerto is originally written for Trumpet and String Orchestra, this version using a reduction for Piano.

An American in Valencia was commissioned by the United States Army Band ?Pershing?s Own? in Washington, DC in 1999. The Premiere Performance was May 22, 1999 at the Casa de Cultura in L?Alcudia (Valencia), Spain by Rafael Sanz-Espirt conducting La Filharmonica Band. Woodrow English, Principal Trumpet the U. S. Army Band "Pershing's Own" as was the soloist.

The piece is in three movements in a Spanish style suggesting the grand gesture of Bull fighting.The trumpet soloist portrays a toreador with the splendor of the corrida. The first movement represents theentrance of the toreador with all of the fanfare and showmanship as he bows to the audience. The second movement is a love song in a waltz tempo. The third movement starts with the raging bull coming out ofit?s corral, ready for the fight. The trumpet soloist is able to contain the bull with dashing melodic figures and a cadenza leading to the final bow in victory.

An American in Valencia was awarded Finalist in the Band Composition Competition of the American Prize in 2017. One of only two Concertos with Band awarded that year. It is recorded on Mark Records with Rafael Sanz-Espirt conducting La Filharmonica Band. Woodrow English is the soloist.

Gregory Fritze is a prize-winning composer and Fulbright Scholar, as well as an active performer and conductor. He recently retired from Berklee College of Music where he was Professor and Chair of Composition, serving on the faculty from 1979 to 2016. He has written over ninety compositions for orchestra, band, chamber ensembles and soloists. He has won over fifty composition awards both nationally and internationally, including First Prize in the 1st WASBE (World Association of Symphonic Bands and Ensembles) International Composition Contest 2017, First Prize Winner of Reneé Fisher Composition Prize, First Prize Winner in Concurso Bienal de Composición de Musica para Banda, Ciudad de Santa Cruz de Tenerife (Spain), Menzione d?Onore (highest award given) of the Mario Bernardo Angelo-Comneno International Music Competition by the Accademia Angelica Costantiniana Arti E Scienze (Italy), First Prize in 1991 TUBA International Etude Composition Competition, the IBLA Grand Prize (Italy), several awards from The American Prize, Composition Awards from Standard Awards Panel of American Society of Composers, Authors, and Publishers and many others. His compositions include works published by several publishers in the United States, South America and Europe and have been performed extensively throughout the world.

He has been a frequent traveler to Spain since 1993 and has promoted compositions by Spanish composers around the world. He is the only composer who has been commissioned six times by Spanish bands for Certamen competitions, with each band winning first prize.

He has thirty-three compositions commercially recorded on Albany Records, MSR Classics, Crystal Records, Mark Records and others. He has been a guest lecturer, conductor and performer at many colleges, universities and music festivals in the United States, Canada, Japan, South America and Europe. He was born in Allentown, Pennsylvania in 1954 and has Composition degrees from the Boston Conservatory and Indiana University. He now resides in Daytona Beach Shores, Florida.