forgive me if this is already answered but I can't find it

A song I have just created is displayed as a narrow vertical strip, unlike the songs I've downloaded. The bars/chords are all displayed but in a very compressed form. I can't find a way to change the page width on screen - resizing the window makes no difference and changing the page setup is for the printer.

The attached pics show my created song (SWAY RRR) which appears narrow and a downloaded song (LULLABY...) which is nice and wide

Click image for larger version.  Name: Sway RRR.jpg  Views: 494  Size: 40.9 KB  ID: 288

Click image for larger version.  Name: Lullaby.jpg  Views: 415  Size: 58.3 KB  ID: 287

Changing the size using N and S only changes the symbol width, not the displayed page.

running iMac here