Mollenhauer, a well-known German recorder manufacturer, has the world's top professional recorder manufacturing standards. Today, Mollenhauer is not only a manufacturer and distributor of recorders, but also promotes them, and has its own recorder museum. The price of the Swing ABS flute series is almost the same as that of YMAHA/Aulos, so it is recommended to purchase a Japanese rubber flute series that is more targeted for production. Designer Fred Morgan collaborated with Mollenhauer on the Denner model of the wooden flute, which has a loud tone and a very dynamic beauty, which is Mollenhauer's signature series, compared to the MOECK series, the rhythm is only 442HZ, but the choice of model and wood is more than MOECK. The same model of Denner alto flute, ebony wood is about four to five thousand yuan more expensive than pear wood, and consumers can choose according to their own timbre preferences and economic conditions. After the death of Fred Morgan, the Mollenhauer Modern wooden flute, designed by Nik Tarasov and Joachim Paoezold, was used by Michala Petri for the recording of the album, and in terms of treble, the vocal range was stronger than that of MOECK Ehlert, and it could play all semitones up to the treble C with very strong or weak dynamics. In terms of price, Mollenhauer's overall pricing is close to that of MOECK.