林義忠，得華語樂壇重量大師級演唱會音樂總監、編曲家、製作人，大力支持及跨刀相助的馬來西亞籍國際創作歌手，至今寫了近千百首歌曲，發過二十二張個人創作專輯，包括華語與閩南語專輯。近年專輯製作人乃孫燕姿演唱會音樂總監兼唱片製作人，Kenn C。
專輯編曲人除了Kenn C，也包括張惠妹演唱會音樂總監Martin Tang，金馬獎電影原創音樂獎得主Ricky Ho（賽德克。芭萊），還有華語流行樂壇著名編曲人Adam Lee, Terence Teo, Jonathan許華強，Jaydon Joo等人。
林義忠榮獲2011年馬來西亞福音音樂“最佳中文男歌手獎”與“終身成就獎”。其專輯特色和風格就是“沒有單一特色和風格”，因為林義忠和製作人樂於嘗試各樣音樂風格和演繹唱法，包括：搖滾、古典、輕鬆、抒情、西洋、中國風等等。
林義忠擅長正面激勵性感人歌曲，現代基督教流行音樂，和悅耳教會敬拜讚美詩歌，最燴灸人口的有“牽我的手”、“真正好／主耶穌真好”、“一粒沙”、“不再回頭看”、“不要只風聞有你”、“釘痕的手”等等。
林義忠的創作也收錄在其他歌手專輯裡，包括專輯主打歌曲，如：湯蘭花、裘海正、龍飄飄、劉冠霖、梅蘭等等。
GT Lim, a Chinese Malaysian international composer-singer with albums having the support and involvement of great Chinese pop music heavyweights the like of concert music director for Chinese pop diva Amei, Martin Tang, concert music director and album producer of Stefanie Sun, Kenn C, Golden Horse Award winner for original movie score, Ricky Ho, and also Chinese pop music famous arrangers like Adam Lee, Terence Teo, Jonathan Koh and Jaydon Joo. GT’s more recent albums are all produced by Kenn C.
GT Lim has written close to 1,000 songs and released 22 personal albums to date, including both Mandarin and Hokkien albums. GT won the 2011 Malaysian Gospel Music “Most Impactful Male Artiste (Mandarin) Award” and “Lifetime Achievement Award”. His albums’ uniqueness and genre is “no one unique style and genre” as GT and his producer enjoy exploring all kinds of different music genres and rendition styles including: rock, classical, lively, sentimental, western, oriental, etc.
GT’s forte is positive, motivating and moving songs, contemporary Christian music, and melodious congregational praise and worship songs. Some of his popular hits are “Hold My Hand”, “Jesus is so good”, “A grain of sand”, “Never looking back”, “Not just to hear of you”, “Nail-scarred hands” etc.
GT’s compositions can be found in other singers’ albums as well, including their title tracks, for example: Tang Lan Hua, Donna Chiu Hai Zheng, Long Piao Piao, June Liu Guan Lin, Mei Lan etc.