Big Bang member TOP made a surprise appearance on 'I am Singer.'

On December 5, at the recording of 'I am Singer' at MBC's Dream Center in Il-san, Gyeong-gi-do, TOP - who is under the same record company as Gummy - appeared on stage to give support.

The contest this time was the San-ool-lim Special, with Gummy choosing the song 'Ge-goo-jeng-yi' (Naughty Boy). She received strong praise from San-ool-lim's Chang-hwan Kim at the mid-way judging due to her performance which had a dreamlike start and ended with an exciting twist.

Along with that, Big Bang's TOP added supporting fire, causing the audience judges to respond warmly to the performance of 'Ge-goo-jeng-yi'.

In the San-ool-lim Special of 'I am Singer', which will air on December 11, besides Gummy's performance of 'Ge-goo-jeng-yi', people will see Jeok-woo perform with 'By Myself In The Field,' Min-Soo Yoon with 'What About Me', Sooni In with 'Youth', Bobby Kim with 'Reminiscence', Kyung-ho Kim with 'Cup of Tea', and Ja-woo-rim with 'Laying Silk On My Heart'.