Thank you, Zetetic, for your comment, I appreciate it.
I don't know very much about music, but I thought that this chord progression is commonly used progression, since 17th century (it was used by Telemann, Bach and Vivaldi) - Handel wrote an entire Passacaglia (from Suite No. 7 in G minor) using these chords. It is also quite frequent in classical and romantic music (Mozart’s Sonata in F major K 332, my favorite
).
Yes, I suppose it is often found in pop songs as well, but I don't think it makes a big difference between the “old music” and pop songs. Thanx again for your interest,
Dijana