Two of the best instrumentalists, Detlef Tewes on mandolin, and Boris Björn Bagger, guitarist and professor in his home, the city of Karlsruhe, played for the cause of the "forum of cultural cooperation Solingen-Minsk" and reaped exuberant applause in the tightly packed concert hall of the Klingenmuseum for their matinee. They had cooperated in this unusual sound combination of mandolin and guitar to draw an astounding arc between the classical and the modern, but to also mediate between high music, salon music and a virtuosity that is pop music.

This succeeded with good-natured virtuosity, exaltedly leaving behind the mere technical, and combining, as is fitting for mandolin, the rustic and the sophisticated. The mandolin rang in Italy and Spain, made the southern sun rise, and the black blood of melancholy flow, while poking much fun at salon-music.

This convergence of music-historical presence and virtuosity became an entity of it's own and off-handedly introduced the listener to a variety of new techniques. Whether the enamored buzz of the mandolin was forced into sharp precision and an unusual stature, or whether the fire of the guitar itself burned above and beyond the regular mensuration.

The agreement among the two musicians is so exact, and, at the same time, so full of ironic humor, that old and new was experienced in ways unheard before; the remembrance of Shakespeare's world in the composition of an unknown Englishman, the meeting with Niccolo Paganini, who had played guitar and mandolin before becoming world-famous as a violinist, the discovery of Astor Piazzola, of the Estonian composer Lepo Sumera, the sound discharges of Willy Althoff, who had personally dedicated this piece to the man with the mandolin, the passion of Heitor Villa-Lobos or even the sensational discovery of Carlo Munier at the end of this enchanted musical evening. Concert August 1998 in Tallinn / Estonia
"This concert with the virtuosos Detlef Tewes and Boris Björn Bagger has been this seasons main event!"

Concert in Schloss Aulendorf (May 2001)
"Phantastical start for the concerts in Aulendorf Castle - the glamorous hall was sould out". "The Capriccio Spagnuolo proved to be another irresistably catchy piece receiving thunderous applause."

Die Welt
"He, who does not know Detlef Tewes can not believe the wondrous things he can create with his inconspicuous looking mandolin"

FAME Melbourne
"Detlef Tewes wandered between gracefully romantic passages and diabolicaly pacefull parts, a true musical firework for Mandolinists."

Rheinpfalz
"Detlef Tewes is; the greatest living Mandolinist, he mastered quick jumps, arpeggios, scales and chords with absolute confidence and musical wit."

Badische Neueste Nachrichten
" .... Boris Björn Bagger proved, his reputation to be one of Germany's best guitarist is justified........" The "devilish violinist" Niccolò Paganini played mandolin and guitar.

The fame that immortalized Vittorio Monti came from a single piece, his "Czardas". Hardly anyone knows though, that it was originally composed for mandolin.

The Violin concert by Felix Mendelssohn-Bartholdy has often been played in chamber concerts, with the composer playing the piano and the mandolinist Vimercati, who played the violin-part on the mandolin.

Many musical pieces have been dedicated to the duo Tewes - Bagger , among which some by Lepo Sumera, Dietrich Erdmann, Raimo Kangro, Urmas Sisask, Wolfgang Riehm, Erkki-Sven Tüür and Valdo Preema.