Can a Report in Base be grouped horizontally?

LO 4.2.3

I’m trying to make a report with 2 items—Song, Date Performed

It is easy to group vertically, like this

SONG    DATE
Song1   3/1/14
        3/8/14
        3/14/14
Song2   3/4/14
Song3   3/2/14

What I’d like is to group the Date Performed horizontally. I don’t know how to do this.

   SONG    DATE
   Song1   3/1/14,   3/8/14,    3/14/14
   Song2   3/4/14
   Song3   3/2/14

It’s not exactly straightforward to do, but HERE are some techniques. Or you might try exporting to a .txt file (via Calc?) and batch-replacing instances of return (line feed) TAB with , (comma) TAB.

Not especially convenient. But it would work.