 " Who Am I " is a song with a length of five minutes and thirty @-@ five seconds . According to the sheet music published by Musicnotes.com , it is in set common time in the key of B major and has a tempo of 66 beats per minute . Mark Hall 's vocal range in the song spans from the low note of G ♯ 3 to the high note of F ♯ 3 . " Who Am I " has been described as a pop rock and adult contemporary ballad . Based around the piano and featuring orchestral sounds , it begins slowly before building up into a musical crescendo . Lyrically , the song is centered in praising God , relating a theme of nothingness without Christ . 
 " Who Am I " <a href='drop_aux' title='1'><mark>is</mark></a>a song with a length of five minutes and thirty @-@ five seconds . According to the sheet music published by Musicnotes.com , it is in set common time in the key of B major and <a href='got' title='2'><mark>has</mark></a> a tempo of 66 beats per minute . Mark Hall <a href='null_genetive' title='3'><mark>'s</mark></a>vocal range in the song spans from the low note of G ♯ 3 to the high note of F ♯ 3 . " Who Am I " <a href='been_done' title='4'><mark>has</mark></a> been described as a pop rock and adult contemporary ballad . Based around the piano and featuring orchestral sounds , it <a href='uninflect' title='5'><mark>begins</mark></a> slowly before building up into a musical crescendo . Lyrically , the song is centered in praising God , relating a theme of nothingness without Christ . 
 Who Am I  a song with a length of five min and thirty @-@ five seconds . According to da sheet music published by Musicnotes.com , it is in set common time in the key of B major and got a tempo of 66 beats per minute . Mark Hall  vocal range in the song spans from the low note of G ♯ 3 to the high note of fuc ♯ 3 . " Who Am I " done been described as a pop rock and adult contemporary ballad . Based around the piano and featuring orchestral sounds , it begin slowly before building up into a musical crescendo . Lyrically , the song is centered in praising God , relating a theme of nothingness w/o Christ .