SIGNAL #408, officially posted as "Let's record the ballad song of tripleS!: SIGNAL 231128" is the 408th episode of the SIGNAL series.
Summary
Team D has arrived at the MonoTree Studio to record their ballad track. They discuss some of the tips and advice that they gave each other while preparing for their recording, as well as their milestones and achievements that they are willing to achieve in their sub-unit.
The unit's leader, DaHyun, is the first to record while the other members describe the song that they'll be recording. Nien expresses that their song gives her "butterflies in her stomach" as a song ideally set in winter. JiWoo describes the song as a track that resonates with her sentiment to sing a ballad that isn't a cover but an original one. ChaeYeon takes notice of the song's high vocal range, prompting her to practice more so she can adjust and do well on her recording. For Kaede, even the demo of the song made her feel the Christmas season earlier, recommending their song not only to WAV but to other listeners.
Kaede concludes the episode by reminding WAV to vote on the Tenth Gravity, which will determine the official name of the Ballad Dimension.