歌單2 is a personalization app available on the Android platform. Developed by 陳木林, this free app falls under the category of Personalization. While it does not have a specific subcategory, it offers a unique feature for music enthusiasts.

歌單2 allows users to search for songs based on various criteria. Users can select the type of karaoke machine they want to search for songs from, such as 金嗓, 弘音, 音圓, 點將, 瑞影, and 嘉揚. Additionally, users can specify the number of characters in the song title, the language of the song (國台客山粵日英), and the type of vocal (男調、女調、合唱).

The app also provides the option to search for songs based on the release month and year of each karaoke machine. Users can easily navigate through the extensive song database and find their favorite tunes.

Please note that while 歌單2 requires an internet connection for monthly updates on the 20th, it can be used offline for regular song searches.