Parker's decision to make the music for Tame Impala in the studio by himself is a result of Parker liking "the kind of music that is the result of one person constructing an awesome symphony of sound. You can layer your own voice 700 times for half a second if you want, and I just love that kind of music". However, Parker has to translate his music to a live setting with the band, and the band doesn't play the songs until they have been recorded. "The only jamming that's done as a band is done a long time after the song is recorded for the sake of the live environment. It's good for us, because we can take a song that's been recorded and do what we want to it: slow it down, speed it up, make it 10 seconds or 10 minutes long. It gives us a lot of freedom." Some favoured and often-used effects by Parker include phasing, delay, reverb and fuzz. Experimentation with different effects pedals such as Roland RE-20 Space Echo, has led to Parker creating new and unique sounds. "If you make an effort to not put the pedals in the order you're meant to, then you'll end up with something new sounding. We don't have any things that we got from another planet or anything, it's the same things everyone else has used." "People have a distortion pedal and then a reverb pedal. A reverb is meant to make it sound like it's in a cathedral or something. If you put it the other way around, it won't sound like a guitar being played in a church, it'll sound like a church being stuffed inside a shoebox and then exploded. You can do different things just by treating things differently." Parker's process for making music is "I’ll have a sudden, spontaneous vision of a song, have all the parts mapped out in mind, and do my best to record it as quick as I can. I’ll find my eight-track and do a quick demo of just the riff, or a verse or a chorus. The song will go for like 30 seconds. I’ll have a whole bunch of them [demos] and then I’ll just choose which ones to make into full songs".[73] Parker has a strong sense of melody in his music, having composed "excessively melodic music from about the age of 12 to 15". For Parker, the music comes before the lyrics, "I usually write the lyrics after the melody and its timing have been decided. But the words have to be meaningful. I try to synchronise certain words with the best parts of the melody, but it can be really difficult and does my head in. I like to keep the meaning pretty open and ambiguous so that it's not just me that gets something out of the lyrics. I usually write lyrics from a persona rather than tell a specific story."[77] Parker also said "Usually I am sufficiently motivated to think of new songs everyday, but I usually forget them. I seem to get an emotional kick out of sensing feelings of general desperation or hopelessness, whether it's me or someone near me or someone in a movie or anything. It's really difficult to sit down and force yourself to write a song, and that forced nature usually comes out in the song so I just have to wait until they come to me."[77]
Parker's music is heavily influenced by late 1960s and early 1970s psychedelic rock, which is achieved through various production methods. Parker said that he has a "fetish for extremely sugary pop music" from artists like Britney Spears and Kylie Minogue. Parker also loves "fucked-up explosive cosmic music" in the vein of The Flaming Lips, with whom Parker collaborated on the track "Children of the Moon" in 2012, for the release The Flaming Lips and Heady Fwends. Combining these two things, shoegaze bands such as My Bloody Valentine, Slowdive have influenced Parker's music with their contrasting combination of loud guitars and ethereal melodies. Parker has "always been in love with the wall of sound as employed by My Bloody Valentine" and he tries to capture that "melancholy dreamy feel". Parker tries to incorporate this balance into his own music. "If I was singing, I wouldn't be able to match the tone of the instruments, which is really crunchy. The instruments are quite sonically brutal, but the voice is really soft, and I think that kind of resonates with people. It's kind of like My Bloody Valentine, where it's really brutal sounding, but kind of beautiful at the same time". Tame Impala live drummer Jay Watson has described Parker's music as containing "shoegazey guitar sound, but not played in a shoegazey manner".[84] Electronic music is another influence. Parker has used rock instrumentation in an electronic manner, saying "The way we do music, it's organic, but it's meant to be quite repetitive and hypnotic, almost in a kind of electronic nature. Using our playing as though it was a living sample". A heavy feature on Innerspeaker is a pitch-shifted guitar tone that many mistook for a synth. Parker mentioned this by saying "I had a few obsessions when recording Innerspeaker. One was to make the guitars sound like synths and drums sound like drum samples and pretty much anything except guitars and drums. I'm obsessed with confusing people as to the origin of a sound." Parker was inspired to take up various creative endeavours at a young age, "I used to draw a lot when I was very young, and I used to get the most immense feeling of satisfaction from finishing a picture and looking back at it, even though I wasn't actually that good. When I started playing music I got the same feeling from making a song, even if it was just a few noises or drum patterns put together. It was all about the buzz from making something from nothing. Music always affected me greatly as a listener anyway, usually from listening to music in my dad's car or listening to him play guitar." Lo-fi music is also a favourite of Parker's, and he incorporated it heavily in the early days of Tame Impala, heard prominently on the Tame Impala EP. With the release of Innerspeaker, Parker went for a different approach to a lo-fi sound, aiming more for a more cosmic and sonic wall of sound, helped by mixer Dave Fridmann. Parker explained "It sounds more cohesive, like an organism. It has a different emotion to it, it brings out a different feeling when it's absolutely blaring at you. I love that sound." Parker has also stated that Supertramp, one of his favourite bands, are a major influence on the musical style of Tame Impala. Despite their difference in sound, he feels he is always somewhat "channeling Supertramp". He has said that listening to the Bee Gees on mushrooms inspired him to change the sound of the music he was making on Currents.