Archaboilus

Archaboilus is an extinct genus of bush-cricket that lived during the Jurassic period. Five species are known, ranging from the earliest Jurassic (Hettangian) to the end of the Middle Jurassic (Callovian) of Asia.
Although behaviors are difficult to reconstruct for extinct species, in 2012 scientists based in China, the UK, and the US recreated the call of "A. musicus" based on a well-preserved fossil from the Jiulongshan Formation of China.
Based on studies, it is believed that male "A. musicus" produced pure-tone (musical) songs using a resonant mechanism tuned at a frequency of 6.4 kHz.