The phrase "tulled me an sleep" is an unusual way of saying "lulled me to sleep". It is likely that the speaker is using a regional dialect or slang term. The word "tulled" is a Scottish word that means "to rock or sway" or "to soothe". So, the phrase "tulled me an sleep" could be interpreted as "rocked me to sleep".
The phrase "like singing to children before when he want to sleep the atmosphere full of passion and love" is a bit more metaphorical. It suggests that the act of singing to children is a way of creating a loving and nurturing atmosphere that is conducive to sleep. The word "passion" implies that the singing is done with great care and affection, while the word "love" suggests that the singer is deeply connected to the child.
Overall, the phrase "tulled me an sleep" is a poetic way of describing the experience of being lulled to sleep by a loved one. The use of the word "tulled" suggests a gentle and rhythmic motion, while the imagery of a loving atmosphere implies that the sleep is peaceful and restorative.