What song shall I sing ... (reprise)

Most curious of all, as I lay in bed this morning in that strange world between sleep and wakefulness, I was running over an aria in my head, "But who may abide" (from Handel's Messiah). It slowly dawned on me that the ornaments I was adding in the cadenzas were in the style of a Carnatic classical free raga exploration, the alapana (or ragam) ... and it all worked beautifully! Where did that come from?