What we understand about the human mind is how it constructs and interprets patterns from missing or jumbled up lines of data. Our minds can construct a sentence from missing words like for example as follows.......
I cnduo't bvleiee taht I culod aulaclty uesdtannrd waht I was rdnaieg. Unisg the icndeblire pweor of the hmuan mnid, aocdcrnig to rseecrah at Cmabrigde Uinervtisy, it dseno't mttaer in waht oderr the lterets in a wrod are, the olny irpoamtnt tihng is taht the frsit and lsat ltteer be in the rhgit pclae. The rset can be a taotl mses and you can sitll raed it whoutit a pboerlm. Tihs is bucseae the huamn mnid deos not raed ervey ltteer by istlef, but the wrod as a wlohe. Aaznmig, huh? Yaeh and I awlyas tghhuot slelinpg was ipmorantt! See if yuor fdreins can raed tihs too.
Our perception is through the mind and not uniquely through the physical senses. How we construct and interpret images and audio is through our mind on a subliminal level of our consciousness, which requires familiarity of the forms, where it be written text, audio or visual images.
Your situation is not difficult to determine, that is, you presented a situation where you were meditating in your music and your conscious was subliminally bombarded by the 2 second blurb. This 2 second blurd was scary to you, but rest assured that you are responsible for constructing and interpreting it in your mind. It would not have been a physical audio that your physical senses picked up, but your mind constructed and interpreted it that way.
Could you repeat it, well the answer is no. This means that you had put yourself in a state of mind that opened a door beyond the five senses. This is what the occult do, in their state of mind to open the door to demonic influences, sometimes through drug abuse. It seems whether you knowingly or willingly done so or not, you inadvertently ventured into that state which brought your mind in synchronicity of the realm that exists beyond what is seen, what is heard, what is tasted, what is felt, what is smelt.
I warn you to remove yourself from this music and meditative state, that this could be an initial warning of your spirit protecting you by the fear that you experienced. That fear is your defence, therefore don't ignore it and start to fast and pray to Jesus to remove you from this direction.
I hope that I provided you with convincing and compelling reasoning to abandon the music and meditative state you enjoy going into. As Jesus said if your hand makes you sin therefore cut it off, meaning deny its use for the purpose it makes you to sin. In your case, you need to deny your ears and love of music and the meditative state and completely remove yourself from this situation, that you are responsible for getting yourself into.