I have the problem of having two Facebook accounts by some accident that I wasn't aware of when it happened. Now, since I'm a musician, I don't want to lose the friends from the "smaller" Facebook account. What can I do in this situation? I only have one password!
The official answer is no, but MakeUseOf has published a guide that outlines the most expedient way of combining two accounts, which relies upon downloading an archive of your Facebook data and re-importing some of the information into your new, "merged" account.
Data such as friends and photos are more easily re-imported than your timeline and news feed history, which there is unfortunately no way of transplanting.