If you have music in your life — then your kids will may like singing. My kids never liked zemirot per se — but they liked singing songs. So we sang the songs they wanted to sing. I always felt blessed that my kids wanted (for the most part) to actually stay at the Shabbas/t table. I found sometimes that if i prepared a bit (a story, an article) and it sounded like a didnt prepare — it helped. Anecdotal evidence is not evidence because there are so many variables that come into play.
