There are multiple definitions for that sweet word, “strain,” but I’m going to tell you the ones that work for me:
1 a: lineage, ancestry
2 a: inherited or inherent character, quality, or disposition <a strain of madness in the family> b: trace, streak <a strain of fanaticism>
3 a: tune, air b: a passage of verbal or musical expression c: a stream or outburst of forceful or impassioned speech
4 a: the tenor, pervading note, burden, or tone of an utterance or of a course of action or conduct b: mood, temper
Sweet lineage, sweet disposition, sweet streak, sweet music, sweet note or sweet temper. That’s what I mean by “Sweet Strain.” How much more all-inclusive could one, beautiful word be?
