Jeff Frohner

Associate Musical Supervisor & Musical Director

The native of Lower Austria was already active as a keyboardist and pianist in various rock/pop formations before studying at the Jazz Conservatory in Wiener Neustadt. Later, he performed on stage with artists like Georg Danzer, Andy Baum, The Rounder Girls, and Günter "Mo" Mokesch. He soon discovered his passion for musical theater and began directing and musically leading his first musicals. In addition to TV jingles and commercials, he composed music for Peter Pan, Pinocchio, Wilhelm Tell, and Torquato Tasso. His creativity extended to orchestral arrangements for Jesus Christ Superstar, Fame, Singing in the Rain, My Fair Lady, and Im weißen Rössl, where he often also served as conductor. As a Musical Supervisor, he oversaw productions of We Will Rock You in Utrecht, Oslo, Antwerp, as well as its tour through Germany and Switzerland. Other productions he worked on include Evita, Blutsbrüder, The Rocky Horror Show, Der Graf von Monte Christo, Hairspray, Priscilla, Berlin Berlin – Die große Show der goldenen 20er Jahre, Artus-Excalibur, Bodyguard, Sherlock Holmes, Into the Woods, Hair, Some Like It Hot, Anything Goes, and Sweeney Todd. Most recently, Jeff Frohner arranged and conducted a Barbra Streisand Tribute Concert with Maya Hakvoort at the Vienna Konzerthaus, and he is the Musical Director and Co-Arranger for Abenteuerland - Das Musical mit den Hits von PUR at the Capitol Theater Düsseldorf.

Photo: Jessica Kessler 

Johannes Weik

Banjo

The Cologne native began playing concert guitar at the age of six. He graduated with top honors from the University of Music in Hanover, majoring in electric guitar and minoring in piano. For many years, he has been composing his own music, particularly for his band A kew's tag, which has released three albums, and for his band Son of a Bach, whose videos have garnered millions of views on YouTube. He frequently tours with various musicals, including Evita and A Tribute To The Blues Brothers.

Since 2017, he has been the guitarist for the Freilichtspiele Schwäbisch Hall, where he composed the music for the play Maria Stuart in 2023 and Der Besuch der alten Dame in 2024. Through diverse engagements, he has mastered not only acoustic and electric guitars but also banjo, mandolin, ukulele, and cello, the latter of which he taught himself in 2019 for Die Dreigroschenoper at the Theater Heilbronn. He is an endorser for Ernie Ball and Takamine Guitars.

David Romero Peralvarez

Reed / Clarinet / Alto Saxophone

As a freelance musician, David Romero Peralvarez specializes in clarinet, bass clarinet, and tenor saxophone. He currently teaches at various music schools in Valencia while actively performing. Known for his versatility and experience, he works across classical music, jazz, and funk genres. He collaborates regularly with the Berklee College of Music and has contributed to several film music recordings.

Photo: Vitoria Mastrela  

Diego Martínez Ordiñana

Trumpet

Originally from Valencia, Diego Martínez Ordiñana began his musical journey at the Sedajazz Academy before specializing in jazz at the "Joaquín Rodrigo" Conservatory of Music, where he graduated. As an exceptionally versatile musician, he is equally at home in styles such as swing, Latin jazz, salsa, and more. Currently, he teaches at various academies in Valencia and performs regularly in live music venues and shows. Additionally, he collaborates with the Berklee College Valencia, Royal Caribbean, and the production of Grease – The Musical in Spain.

Florentin Chiran

Violin

Born in Bucharest, Romania, Florentin Chiran began his musical journey at the age of five with music and violin lessons. By the age of nine, he joined the children’s orchestra of the Central House of the Army (CCA) in Bucharest and already performed as a soloist. Early on, he received numerous awards: in 1993, he won first prize at the National Chamber Music Competition W. A. Mozart in Constanța, and in 1994, he secured second prize at the International Chamber Music Competition Mihail Jora.

He pursued studies at the Bucharest Conservatory (1994–1996) and the Folkwang University of the Arts in Essen (1997–2000), laying the foundation for his career. Florentin Chiran has collaborated internationally with ensembles and orchestras, including a USA tour with the Bamberg Symphony Orchestra and Nigel Kennedy in 2000.

As a concertmaster, he has been involved in numerous musical productions, such as Elisabeth, Les Misérables, Beauty and the Beast, Tanz der Vampire, Chicago, The Hunchback of Notre Dame, and Ghost. In 2003, he was awarded the European Folk Music Prize "Eiserner Eversteiner".

In 2011, he toured as a partner of pianist Joja Wendt, performing 58 concerts across Germany and Switzerland under the program Im Zeichen der Lyra. His diverse projects span film music, orchestral work, and folk music. In 2022, he accompanied Marianne Rosenberg on her Diva tour. Additionally, he performed at the International Interwar Music Festival in Bucharest with singer Isabel Dörfler and the Big Band Radio Romania.

Thorsten Heitzmann

Trombone

Thorsten Heitzmann studied at the Hochschule für Musik und Tanz Köln and was a member of both the German National Jazz Orchestra (BuJazzO) and the Cologne Big Band. He performed in musicals such as Chicago, Saturday Night Fever, Hair, and Motown – The Music Show. In 2004, he played trombone in the “Anke Late Night Show” with Anke Engelke on SAT.1, featuring artists like Nina Hagen, Matt Bianco, and Till Brönner.

With his own band Bonefunk Heitzmann released two albums and performed at international festivals. His collaborations span a wide range of styles and artists, including Sarah Connor, the NDR Big Band, Albie Donnelly’s Supercharge, Marc Marshall, Pee Wee Ellis, the African-European Orchestra, Udo Jürgens, Pe Werner, Barbara Schöneberger, Reinhard Mey, Tony Marshall, Jürgen Drews, and the Wolfgang Schmidtke Orchestra.

Photo: Frank Wiesen 

Rubén Díaz Cuchillo

Drums

Rubén Díaz Cuchillo comes from a family of musicians and began his musical education at an early age. He completed his studies in jazz percussion at the Conservatory of Valencia and later earned a Master's degree in Performance and Music Research. Over the past ten years, he has worked as a guest musician for national and international artists and participated in the country’s most prominent jazz festivals in formations such as Big Band, Quartet, and Quintet. With the latter formation, he won a prestigious award in 2020 for the best jazz album.

Robert Lindemann

Double Bass

The experienced musician specializes in electric bass and double bass, focusing on musical theater, songwriting, artist accompaniment, and touring. A native of Northern Germany, he has lived in Cologne for over 20 years and has been collaborating regularly with ATG Entertainment since 2007. Lindemann has played for musicals such as Abenteuerland – Das Musical with the hits of PUR, Moulin Rouge, We Will Rock You, Bodyguard, Berlin Berlin – Die große Show der goldenen 20er Jahre, Hairspray, and Richard O’Brien’s Rocky Horror Show. He also accompanies artists on tours. His performance list includes major events like Rock am Ring, Schalke Arena, Semper Oper Dresden, theaters across Europe, and countless club and festival appearances. Lindemann regularly releases his own pop, jazz, and rock music, where he also presents himself as a singer and composer.