UPDATE 11.15am: With the football season over, the summer festival season kicked off with about 15,000 party people invading Wellington Square, East Perth, yesterday for Parklife.
Parklife has combined rock, pop and hip-hop since its launch in Perth seven years ago but yesterday's line-up had an inherent, danceable sound in common.
It included local psychedelic rockers Tame Impala, Sydney festival favourites the Presets and Swedish electro-pop queen Robyn.
Other hot performers among the four dozen acts across five stages included hip-hop duo Chiddy Bang, New York synth-pop duo Chairlift and English soulful rapper Plan B.
In particular, London band Citizens! sweltered in the afternoon heat and singer Tom Burke must have regretted wearing tight black jeans.
Parklife heralds another busy summer of festivals with Rock-It, Stereosonic, Big Day Out, Laneway, Summadayze and Southbound to bounce through WA in the next few months.
Judging by the half-dozen drunk girls lolling outside the venue in the early afternoon, some lack the required stamina for the season - or perhaps the common sense.
At least six patrons were arrested, most for minor disorderly conduct and breaches of the 20 move-on notices issued by 4pm, WA Police Insp. Gerry Cassidy said.
There was a total of 20 arrests and summonses and 98 move-on notices.
"Towards the conclusion of the event, a 21-year-old Stirling man was arrested for disorderly conduct," a police spokesperson said.
"During this, it will be alleged he spat blood at police officers and a police officer injured his knee attempting to restrain the offender.
"He is due to appear in Perth Magistrate's Court on October 23."
A 21-year-old man was issued with a summons for possession of tablets, believed to be ecstasy.
Sniffer dogs patrolled the concert and medical staff were on standby to help people overcome by the heat and those who just overdid it.
Three people were taken to Royal Perth Hospital for drug- and alcohol-related illness.
Seven complaints were made to police by local residents.