I'm LOVING the atmosphere of this. It's so extremely interesting. The idea is just so good that I really really wish it would go on into a full blown song, whether it be electronic, alternative pop, or epic soundtrack. Because this sounds like a captivating introduction into a really cool piece and this is probably the first time I've ever truly wanted a concise song to be taken further; usually short and sweet tracks are suitable for me. The mystery behind the hidden door is silently screaming in this piece and I'm just so anxious to know what's on the other side! Either way, this is wonderful work. Instrumentation is unique as well as the mystical melodies, tied with the subtle beat makes this song perfect. GREAT job! I am sincerely impressed whether you choose to expand this or not.