Shlomo Carlebach wrote the popular melody in the 60's when the leaders of the Soviet Jewry Movement (Student Struggle for Soviet Jewry) came to him and asked him to compose an anthem. This can be verified by Avi Weisz of the Hebrew Institute of Rivendale who spoke at Shlomo's levaya and mentiioned the nigun. It appears on the I Heard the Wall Singing recording of the 1960's. And I have that recording in my collection.
>From: Kfarcenter (at) aol(dot)com
>Reply-To: jewish-music (at) shamash(dot)org
>To: World music from a Jewish slant
>Subject: Re: Four Quesions on Am Yisroel Chai
>Date: Mon, 28 Apr 2003 19:16:01 EDT
>
>I thought there was a Carlebach conneciton to the song...