Alexa crossfading syllables between words

Not certain if this is a new update, but I have never heard her do this before. Much like a voice over in a radio spot, between a couple of words syllables are cross faded

Little harmonica jam

I got a set of harps for my birthday, I am starting to learn how to play the harmonica. It is a set of seven harps, from fender. Pretty cool! This jam uses the a and E harmonica for the rhythm. I switch them back-and-forth in real time. Then I used the E harmonica for the small lead I put on the top.