The 앱, 그시절그노래 - 트로트 노래모음, serves as a dedicated platform for fans of Korean trot music, showcasing songs from the 1930s to the 2000s. It is designed for users who enjoy nostalgic tunes, making it ideal for leisure activities such as exercising, walking, driving, hiking, or fishing.

Key features include free access to a vast selection of trot songs without the need for a membership, immediate playback upon song selection, and the ability to follow along with lyrics. Additionally, users can enjoy uninterrupted listening even with the screen off, as well as options for repeating individual songs, entire playlists, or random selections. The app also allows users to curate their favorite tracks and provides regular updates to its music library.