https://www.helloproject.com/release/detail/EPCE-7959/
https://www.helloproject.com/news/19474/
They did not perform "Watashi no Lamin Tacchione" yet.
Lamin Tacchione (Italian : Lamentazióne ; English : Lamentation)
At the opening MC, all members greeted the audience in unison with "We are Morning Musume '25!" Leader Miki Nonaka then announced the release of their 76th single. The release date appeared on the stage screen, and Nonaka promoted it, saying, "It will be released as a double A-side single on December 3rd, so please check it out." Fans in attendance responded with loud cheers and congratulatory applause. The new single features two tracks: "Teka HAPPY no HAPPY!," which has been performed since the tour's opening day and marks the last song for the two graduating members, and "Watashi no Lamin Tacchione." Both songs were written by Tsunku.
Following this, they performed one of the new songs set for release on December 3rd, "Teka HAPPY no HAPPY!" True to its title, the song features lyrics sprinkled with ‘HAPPY’, creating a world overflowing with euphoria. Its upbeat chorus dance and unique choreography matching the "OK" lyrics have already sparked excitement at concerts, with some fans even dancing along with the members.
During the MC segment, the members also mentioned "Watashi no Lamin Tacchione,” whose title was revealed for the first time at today's show. Sakurai Rio confessed, "It took me a while to remember (the title)," admitting the unfamiliar word combination was challenging. Yumigeta Ako teased fans, saying, I want you to hear it soon!
https://girlsnews.tv/unit/478840
Nonaka: "The title of the new song is ‘Watashi no Lamin Tacchione". It is written in katakana.”