35 Boys 5 Concepts is an EP by contestants of the South Korean survival show Produce 101 Season 2.

[1] Produce 101 Season 2 was a South Korean survival show that aired on Mnet from April to June in 2017 where 101 male trainees from various entertainment companies competed to debut in an 11-member boy group which would promote until December 2018.

The nu-disco song "Show Time" was produced by Veethoven, Oh Sung Hwan, ASHTRAY and Kingmaker.

The synth pop/funk song "I Know You Know" was produced by Jeff Lewis, nomad, MRey, and Hyuk Shin who has worked with many major artists in K-pop industry, including Exo, Shinee, f(x), Girls' Generation and Teen Top.

The Future EDM song "열어줘 (Open Up)" was produced by Devine Channel who has composed BTS's Fire and VIXX's Shangri-La.