*Shortcut for playing whole song*

Am I soft in the head or is there no shortcut key for playing the whole song?
I’ve done a keyboard remapping in an Impulse Tracker style but don’t seem to be able to find this option. It was F5 in Impulse tracker.
Also, I have not been able to do the Alt-L type selection things and lots of other stuff that is different.
Will there be an ‘Impulse Tracker compatibility mode one day’.
I don’t mean to harp on about it, it’s just I’ve spent the best part of 10 years using Scream Tracker and Impulse Tracker type stuff and it’s hard (neigh impossible) to leave those old habits.
Anyway, my question is: Is there a shortcut to play the whole song from the beginning (without using the mouse)?

Ctrl+Home goes to the start of the song, then just play as normal.