I answered a Q earlier, and the BA went to someone who started their answer with:
"well i am her biggest fan"
I object to anyone calling themselves "Biggest Fan' of anything ~ do they think it makes them special?!
RE your example:
This is a common situation with modern music listeners, especialyl teenagers. People fall in love with one or two songs, and suddenly that band is the greatest in the world and they love them *so* much.
Next week, they've become the biggest fan of another "my favourite band".
I don't believe there is such a thing as a 'Real Fan'.
Personally, I have 10 equal favourite bands & artists {'The List'}, and several others who I am a great fan of {same as saying "I greatly enjoy their music"}. But in amongst the many songs I love by my favourites, there are songs many fans regard as classics that I can't stand! Does my dislike of these 'basic' tracks make me any less of a fan? Well, I don't think so.
Some people believe that naming obscure songs proves your 'total fandom'.
It doesn't. All it proves is that you liked the band / artist enough to explore the depths of their output, and have found some less-common songs you particularly enjoy.
With one of 'The List', when asked for favourite songs, I can list far more than most due to their 40-yrs+ career and three different eras. But does that make me more of a fan than the person who only listens to one era yet plays their music all the time and knows every song from that era intimately? No, it doesn't.
** Jesus Knows the Answer's BQ6 is a perfect example of this. The band in question above is Fleetwood Mac, of whom I love a vast majority of songs from 1967 to the present day ~ that's around 217 songs! Does this make me a 'Real' fan and Jesus Knows...' only a partial fan? Not at all - not if he(?) is sincerely a lover of the 65 songs he likes.
Jesus Knows..' also makes an interesting point: "a fan is someone who... ... knows most of the lyrics and meanings from them and knows every title of their albums and the entire history of the band and years and stuff like that".
I have to disagree with that. Of 'The List', the only 3 I can apply *all* that to is Fleetwood Mac, Stevie Nicks, and Mike Oldfield. For the rest, I know all about the lyrics, albums and 'years', but couldn't tell you who a lot of the band members are, just the 'frontmen'!
When dealing with a band like Fleetwood Mac or Jethro Tull, who have a 40-yrs+ back catelogue, there are going to be many people who only listen to a certain era of that band and know nothing of it's history (or future), and they are still 'fans' because they love the music.
I truly believe that you do NOT have to know every little detail about a band's members personal lives {or even who all the band members are}, or the release dates of albums or singles to be considered a 'fan'. Loving the music is enough...
I also think there are sort of 'degrees' of fandom:
Likes = enjoys a few songs / an album
Fan = likes quite a lot of their songs & albums {or all}
Loves = these are the bands without whose music your life would have a large hole.
{there is probably a much better way of phrasing / naming these}
BQ: The big picks from 'The List' :~
Jethro Tull
Fleetwood Mac {1967 - }
Mike Oldfield
BQ9: Just getting into The Owl Service ~ though only a few songs.
BQ3: Chocolate... yummy!
BQ5: Punk
BQ8: Randomness is good :)