My friend Chris the pianist suggested that we should learn a tune called Who Wouldn't Love You?
I had never heard of it, but I was able to find several examples of the tune on YouTube and I then discovered that it was a pop song of 1942, written by Carl Fischer (music) and Bill Carey (words).
It's a very pleasant tune, apparently in 16 bars (8 + 8), but with the possibility of extending to 18 bars, for example with a tag in a final Chorus. Who Wouldn't Love You? has some appealing harmonies. The melody note seems occasionally to be on the 6th or 9th of the chord.
I wrote it out in G (for trumpet use): this means I will be playing it in Concert F, which seems right for it, though it also goes well in Bb, as in some performances on YouTube, such as this one (click on to listen).
I store all my tunes in mini-filofaxes and here's the result. It's a bit messy: I struggled with some of the chords and changed my mind in a couple of places.