I really like this one! It sounds like the music that would play during a jungle themed dream sequence or when you were reading a witty letter. I think the melody could use a bit more fine tuning, when all the instruments cut each other off it makes the melody weird to follow, maybe you could have the xylophone be the base melody and the other instruments be the supporting melody; so the xylophone would play throughout the song with the only cut offs being in between the rest notes.