歌っちゃお検索 is a free iPhone app developed by Yamaha Corporation. It is a music search application that helps you find songs when you can't remember the title but can recall the melody.

With 歌っちゃお検索, you can search for songs by singing or playing them on the keyboard. You can start the search from any part of the song and in any key. Even if you hum or sing with lyrics, the app can still recognize and search for the song.

The app also offers a preview and purchase feature. Once a search result is found, you can listen to a preview of the melody. If you like the song, you can purchase it on iTunes or enjoy it if you are subscribed to Apple Music.

When using the "sing to search" feature, it is recommended to sing closer to the microphone and in a quieter environment to improve recognition accuracy.

歌っちゃお検索 searches and displays songs from a unique database that focuses on J-POP, enka, children's songs, classical music, and Western music. The app plans to expand its song library in the future.

Additionally, you can share your search results on social media platforms like Facebook and Twitter.