Based on the context of the passage, what is the meaning of the word drifted?

Question

The notes that drifted from the phonograph upstairs wafted down to Amber, who was sitting on the porch. She was rocking back and forth in the lone rocking chair while listening to the pristine voice of Ella Fitzgerald. Fitzgerald, in her collaboration with Duke Ellington, sang with an engaging cadence and rhythm. Likewise, Ellington gave her a perfect backdrop with his compositions filled with notes slurred together seamlessly. Listening to Fitzgerald and Ellington’s music, Amber appreciated each lyric and note that she took in.

Answer 1

Notice that the music is moving from one point to another.  Drifting usually is associated with something floating on water and moving with the water, like a leaf moving along a stream.  The leaf bobs up and down as it floats along the stream, and the music floats along with a "cadence and rhythm" as it moves.