■2024
・In charge of original song lyrics and composition for the musical drama "Lamento -BEYOND THE VOID-" (Toshimichi Isoe/Yoh Ohyama/Ikuko Ebata/Katuo Kawasumi/Getsuyo Shukujitsu)
・"BAR Stellar Abyss" Yoh Oyama/Toshimichi Isoe/xaki Music provided
・Kanako Ito "Original Songs Collection "Beginning"" released on 4/28!
・Kazuhiro Watanabe 25th anniversary album “Bad Babies”

■2023
・Masatoshi Ono 30th commemorative original album “THE TIES OF AFFECTION” sound produced by Toshimichi Isoe
・"Black Star-Theater Starless-" "Warera Sotoe" Lyrics: Katsuo Kawasumi / Composer: Ryoji Toyoda
・"Your Majesty" "Shinsekai chitsujo" composed & arranged by Yoh Ohyama