^ Technically speaking, only
Best! Morning Musume。1 is an LP (long-playing record), since that term is properly applied only to vinyl albums. The others are
12-inch singles.
I've never bought any of the Morning Musume。vinyl, though I have seen it for sale. I've got LOTS of other stuff on vinyl, though. One thing I've been trying to do is to find the original 7-inch vinyl singles of old songs that H!P artists (especially W) have covered. So far I've managed to get:
Aming "Matsu wa"
BaBe "Give Me Up"
Beauty Pair "Kakemeguru Seishun"
Betsy & Chris "Shiroi Iro wa Koibito no Iro"
Dschinghis Khan "Dschinghis Khan"
Kirara & Urara "Senti Metal Boy"
The Lilies "Suki yo Captain"
RinRin RanRan "Koi no Indian Ningyō"
Ushiroyubi Sasaregumi "Nagisa no '.....'"
The Peanuts "Koi no Fūga"
Pink Lady "Pepper Keibu"
Pink Lady "Nagisa no Sindbad"
Pink Lady "Southpaw"
Unabara Senri Mari "Ōsaka Rhapsody"