right now, i like:
Payphone (but the cover version song, not Maroon 5 version, especially Max Schneider & Avery IPhone cover which i love the most)
Little Things (Sam Tsui version, not One Direction version), very romantic to hear..
Live While We're Young (TwentyForSeven version, not One Direction version), actually the lyric is very naughty, but the song title really motivate me to not giving up..
Starship (Mike Tompkins version, not Nikki Minaj), very great arrangement if you watch it on YouTube.. 300% better than the real version..