So... my problem is this... I'm a girl. Now, that's isn't
really a problem,

only that a lot of songs (and nice songs they are) are written by guys, and in bad keys for me to sing in. Sometimes transposing can work. But more often than not, the songs are written so the verses are low and the chorus is at least an octave higher - which I can do, but it is too high to keep the song sounding balanced, and I'm sure freaks the congregation out!
Examples of this problem are:
Best Friend - Hillsong
Sweetly Broken - Jeremy Riddle (though not an up-tempo one)
Numerous others than I don't go near...
I particularly find this difficult with the up-tempo songs.
I'm always on the look out for up-tempo songs that are singable.
Does anybody have anything that fits into the singable category?