Singing sensation

The picture at left was taken this past weekend when Rebecca went on her very first sledding adventure. From all reports, she loved every minute of it.
Note: Credit where credit is due - this picture was not taken by Greg or I. This picture was taken by Reuben and made available by Elizabeth. Thanks Reuben and Elizabeth!
There have been a few occasions now where we suspect that Rebecca may be singing. I know this sounds unusual, and I'm not sure if there is an expected timeline for this sort of thing, but there have been small melodies with different notes in her own little language. She hasn't seemed to sing using the few words in her tiny slice of English, but she is definitely using more than one "nonsense" syllable type. It bears mentioning that we expose Rebecca to a great deal of music, and this has been the case since day one. She listens to a variety of music every day (classical and contemporary) and we sing to her several times a day as well. There has also been a lot of dancing to music, which we all enjoy. I don't know if this is a factor, or whether this has created a predisposition (presuming it is actually singing), but if we can encourage a love of music, then I would be very pleased. So far she has displayed antipathy to my piano, but for some reason, every time we visit my parents, she will reach up to the keyboard of their piano and play some notes (either on the high or low ends - not in the middle). Maybe she's a traditionalist (my piano is electronic), or maybe it's just because the action on the old piano is looser. Time will tell.