If Stella Lefty’s “Boston” reminds you strongly of Noah Kahan’s “Stick Season”, you’re not imagining the connection.

“Boston” contains an interpolation of “Stick Season”, and Noah Kahan is credited among the song’s writers.

That’s slightly different from directly sampling the original recording.

And with “Boston” currently sitting at No. 5 on the UK Singles Chart, a lot more listeners are likely to be wondering why it sounds familiar.

What is an interpolation?

A sample usually takes audio from an existing recording and places that audio into a new song.

An interpolation recreates an identifiable musical element instead.

That could involve replaying a melody, vocal phrase or other recognisable musical idea rather than literally copying audio from the original master recording.

It’s an important distinction.

If you hear a recognisable part but it sounds newly performed, you may be hearing an interpolation rather than a sample.

How is “Boston” connected to “Stick Season”?

“Boston” credits Stella Lefty, Grace Enger, Jacob Kasher Hindlin, Joe Reeves and Noah Kahan among its writers. The song has been identified as containing an interpolation of Kahan’s “Stick Season”.

That helps explain the sense of familiarity listeners may experience immediately.

Both records also exist in a similar musical universe.

Acoustic instrumentation.

Regional storytelling.

Big singable hooks.

Folk and country influences presented through modern pop production.

Who is Stella Lefty?

Lefty has emerged rapidly during 2026 as a country-pop singer-songwriter.

“Boston” became her breakthrough hit and her debut album Long Way Home has pushed her profile considerably higher. Recent coverage has described her as moving from aspiring songwriter into performer after gaining momentum through social media.

As of August 24, “Boston” is No. 5 on the UK chart after 20 weeks.

That’s particularly notable for a new American country-pop artist in Britain.

Why does Noah Kahan’s influence keep appearing in pop?

Kahan’s success helped accelerate a wider revival of acoustic folk-pop.

“Stick Season” demonstrated that regional storytelling, acoustic guitars and relatively traditional singer-songwriter structures could coexist comfortably with TikTok and streaming-era pop.

You can hear echoes of that success across contemporary music.

That doesn’t mean every acoustic pop artist is copying Noah Kahan.

Rather, successful records often alter the broader musical environment.

When listeners demonstrate a huge appetite for one sound, labels, songwriters and artists naturally become more willing to explore adjacent territory.

Is interpolation the same as a cover?

No.

A cover is a new recording of essentially the same song.

An interpolation takes an element of an existing composition and incorporates it into a different composition.

A sample takes part of an existing recording.

These distinctions can be confusing because all three involve old music appearing in something new.

For listeners, however, the easiest test is:

If it’s basically the same song performed again, it’s probably a cover.

If it’s a piece of the original audio inside another song, it’s a sample.

If a recognisable musical idea has been recreated inside a new song, it’s likely an interpolation.

Other famous interpolations

Pop music is full of them.

Modern artists frequently borrow melodic or lyrical ideas from older compositions while creating entirely new recordings around them.

It’s one reason listening to music can become such a rabbit hole.

You hear one familiar melody.

You search where it came from.

And suddenly you’ve travelled backwards through decades of music.

“Boston” and “Stick Season” offer a particularly current example of that process.

Sometimes that strange feeling of “I’ve definitely heard this before” is completely justified.