Wiktionary
now then
interj. 1 Used to move or return to another subject of discussion. 2 A mild admonishment.
Wikipedia
Now Then (Jeb Loy Nichols album)
Now Then is the fourth album by American-born singer/songwriter Jeb Loy Nichols, released in 2005 on the Tuition record label in the UK and Bongo Beat in the US.