I am wanting to create a sound like this one. It has something to do with LFOs with a degree of instability.

[Shows itself at 0:25-0:30 as it rises in pitch and does so again a few times throughout such as 1:25 and 3:00]

youtube watch?v=F_gv1rIduxw

(yes link is in pieces copy and paste and finish the obvious rest of url; the forum rules prevent me from embedding or posting full links. Ban me or answer my question and help me. Thank you <3)

There is also a similar sound in Lana Del Rey-Born To Die watch?v=Bag1gUxuU0g
at 1:30 and 1:40 (and at times throughout)

Whatever the technique is for creating this type of sound, it was used on both of these tracks of course in their own altered ways.

If anybody knows exactly what this is help me out and share with me. Thank you.