WordNet (r) 3.0 (2006):

soulful
    adj 1: full of or expressing deep emotion; "soulful eyes";
           "soulful music"

Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "soulful":
   affectional, affective, ardent, deep, demonstrative,
   emotiometabolic, emotiomotor, emotional, emotiovascular, emotive,
   expressive, feeling, fervent, glandular, gut, intense, moving,
   of soul, overdemonstrative, profound, sincere, visceral, warm