This site doesn't seem to have enough of the quizzes and riddles and other challenges that seem to be found on other music fora, so let's start one and see if it gains any traction:
Pick the odd one out from each list. In each case, all the items share a particular trait that's somewhat noteworthy, except for the odd one out which does not share that trait.
Example: Having four members in the band, that's not particularly unusual or noteworthy. A band being British, that's not specially noteworthy.
Having a married couple in the band, that would be noteworthy.
OK? Remember, it's a musical quiz.
1. The Beach Boys, The Beatles, The Who, AC/DC, Pendulum.
Clue: why have AC/DC recently had a lineup change? (Solved by CH)
2. Africa, America, Antarctica, Asia, Australia.
Clue: It's a musical quiz, remember, Can't say much more without giving the answer away.
3. Yes, Genesis, Pink Floyd, Marillion, Porcupine Tree.
Clue: Who are/were in the bands? It's nothing to do with the music.
4. The Kinks, Heart, Blur, Oasis, Van Halen.
Blur - all the rest had siblings in the band. (Solved by CH.)
5. The Nazz, Nirvana, Genesis, No-man, Soundgarden.
Clue: It's not about the music or about the personnel - can't say much more.
˙spuɐq oʍʇ ʇsɐǝן ʇɐ ɟo sǝɯɐu ǝɥʇ uǝǝq ǝʌɐɥ ʇsǝɹ ǝɥʇ ןןɐ - uǝpɹɐbpunos ǝuo ʎןuo uǝǝq sɐɥ ǝɹǝɥʇ ˙uǝpɹɐbpunos ˙5
˙sbuıןqıs pǝuıɐʇuoɔ spuɐq ɹǝɥʇo ǝɥʇ ןןɐ ˙ɹnןq ˙4
˙dnǝuıן ǝɥʇ uı uǝʌǝʇs ɹo ǝʌǝʇs ɐ pɐɥ ǝʌɐɥ oʇ ɹǝʌǝu puɐq ʎןuo ǝɥʇ ǝɹɐ ʎǝɥʇ ˙pʎoןɟ ʞuıd ˙3
˙suıɥs ǝɥʇ puɐ ǝdoɔsoɹʎb 'sɹǝɥɔɐǝɹd ʇǝǝɹʇs ɔıuɐɯ 'sʞuıʞ ǝɥʇ buıpnןɔuı spuɐq ןɐɹǝʌǝs - ɐıןɐɹʇsnɐ
ןıo ʇɥbıupıɯ - ɐɔıʇɔɹɐʇuɐ
ןǝʞunɟɹɐb puɐ uoɯıs - ɐɔıɹǝɯɐ
oʇoʇ - ɐɔıɹɟɐ
˙ɐısɐ pǝןןɐɔ buos ɐ oʇ ǝɔuǝɹǝɟǝɹ ou puıɟ uɐɔ ı ˙sǝןʇıʇ buos ǝɹɐ sɹǝɥʇo ǝɥʇ ןןɐ ˙ɐısɐ ˙2
˙sɯǝןqoɹd buıɹɐǝɥ ɹo 'ssoן buıɹɐǝɥ ɥʇıʍ ɹǝqɯǝɯ ʇuǝuıɯoɹd ɐ pɐɥ ǝʌɐɥ spuɐq ɹǝɥʇo ǝɥʇ ןןɐ ˙sǝןʇɐǝq ǝɥʇ ˙1