The fourth season of the Philippine television reality competition show, The Clash was broadcast by GMA Network.

Hosted by Rayver Cruz, Julie Anne San Jose, Ken Chan and Rita Daniela, it premiered on October 2, 2021, on the network's Sabado Star Power and Sunday Grande line up.

The show opens online auditions on May 3 for the season to singers aged 21 and above, following strict guidelines during the COVID-19 pandemic in the Philippines.

[12] Before the show's premiere, Iris Jule from Davao City and Mike Luna from Pangasinan withdrew from the competition due to prior commitments.

[13] Melanie Guevarra quit the show for unknown reasons during the second round until the last battle of the remaining three clashers from each group.

The randomizer will select the clasher to choose their opponent from their respective group to advance in the next round with the majority of the panel's votes.

This season introduces The Clash Rebound where the Top 30 clashers who lost in the first round will be given an opportunity to be reinstated in the competition.

The judges will select the majority of the losing contestants they wanted to advance in the second round and fill in the five seats of the blue group.

The new format for the second round is a four-way battle where four singers (one from each group) will be given one minute to decide who will perform to compete for three places in the Top 16.

Episode hashtag: #TheClashofColors Non-competition performance: BTS' "Dynamite" and "Butter" by Christian Bautista, Julie Anne San Jose, Garrett Bolden, Jeremiah Tiangco, Thea Astley and Sheemee Buenaobra Two battles have been drafted in the seventh episode this week and finished with the first two performances from the second battle.

For the losing pair, they will compete with each other in Matira ang Matibay round and only one will remain, still subject for the votes of the clash panel.

by Julie Anne San Jose, Rita Daniela and Jessica Villarubin Episode hashtag: #TheClashTopTen This is the final round of the competition.

Episode hashtag: #TheFinalClash2021 Non-competition performance: Clean Bandit and Zara Larsson's "Symphony" by Jessica Villarubin The songs interpreted by the last two clashers are the original compositions from The Clash 2021 Songwriting Contest.

Harish Joya is the composer of the winning piece "Bakit Mahal Pa Rin Kita", meanwhile Christian Paul Rosa wrote "Umuwi Ka Na".