1970年代的熱門歌曲有"Daddy's Home","That's How Love Goes","Let's Get Serious","Come Into My Life","Feel The Fire"。他在1980年因發行的Let's Get Serious專輯而獲得葛萊美獎最佳節奏布魯斯男歌手獎。
Arista時期的熱門歌曲有"Tell Me I'm Not Dreamin' (Too Good To Be True)","Escape From The Planet Of The Ant Men","Take Good Care Of My Heart","When The Rain Begins To Fall","Lonely Won't Leave Me Alone","Precious Moments","I Think It's Love","Our Love Story","Don't Take It Personal","Two Ships (In The Night)","Rise To The Occashion"。
1991年在預發行單曲Word To The Badd!!的電臺版本中,他批評麥可·傑克遜的專輯Bad,後來兩兄弟為此還進行過爭論,麥可要求他撤銷這首單曲的發行,傑曼拒絕了,但這首歌在最終發行的You Said專輯中更改了歌詞,把矛頭指向了他的前妻黑澤爾高迪(兩者已離婚),這張專輯是新成立的唱片公司LaFace所發行的第二張專輯,但除了主打歌曲"You Said, You Said" 和"We're Making Woopee" 外均無產生任何打榜歌曲,專輯非常失敗。他隨即有意再尋找新的唱片公司合作,但其實這是他發行的最後一張專輯。