Nathan Harrell East was born December 8, 1955, in Philadelphia, and moved with his family to San Diego at age four, one of eight children in a musical household. He started on cello in junior high before switching to bass guitar at fourteen, drawn to the upright playing of Charles Mingus and Ray Brown. That grounding held: he went on to earn a bachelor's degree in music from UC San Diego in 1978, formal jazz training that set him apart from a hired hand who simply reads a chart.

The session career built fast. By the early 1980s he was in Eric Clapton's touring band, a gig he's held for four decades and counting; he was documented performing with Clapton in Detroit as recently as September 2022. Producers and songwriters began treating him less like a bassist for hire and more like a collaborator. In 1984 he was playing on Philip Bailey's solo album Chinese Wall when he and Bailey realized the record didn't have anything commercial enough for radio, so East sat down with Bailey and Phil Collins and wrote one. "Easy Lover" hit No. 2 on the Billboard Hot 100 on February 2, 1985, kept off the top spot for two weeks by Foreigner's "I Want to Know What Love Is," and went to No. 1 in the UK, Canada, the Netherlands, and Ireland. It earned him an Ivor Novello Award, an unusual credit for a player better known at the time for holding down the pocket, not writing the hook.

In 1991 the jazz side of his career got its own headline act. Keyboardist Bob James was recording Grand Piano Canyon when he asked East, guitarist Lee Ritenour, and drummer Harvey Mason if they wanted to form a band as equal partners rather than a leader-and-sidemen lineup. Fourplay's self-titled debut came out that September, sold more than a million copies, and sat at No. 1 on Billboard's Contemporary Jazz Albums chart for 33 weeks. The group released 14 albums over the years, three of them gold, with six Grammy nominations along the way. Guitarist Chuck Loeb, who took the chair after Ritenour and later Larry Carlton moved on, died in July 2017, and Fourplay has been on indefinite hiatus since a 2018 tribute concert; its last studio record, Silver, dates to 2015. James, East, and Mason remain the group's surviving core.

The pop world found him again in 2013, when he played the bass line on Daft Punk's "Get Lucky." The track won the Grammy for Record of the Year and Best Pop Duo/Group Performance at the ceremony the following year, connecting a career built on decades of session work to one of the defining pop records of its decade.

East didn't put out a solo album under his own name until 2014, more than three decades into a career spent mostly in service of other people's records. Nathan East reached No. 1 on Billboard's Contemporary Jazz Albums chart and featured longtime collaborators including Stevie Wonder and Eric Clapton. He followed it with The New Cool, a duo record with Bob James, in 2015, and Reverence in 2017, both of which also topped the Contemporary Jazz chart. In 2007 the U.S. Congress formally honored him for his contribution to American music.

More recently, East has turned toward family collaboration: Heart And Soul (2023) with Jack Lee, and Father Son (2025), his first full collaboration with his son, pianist and organist Noah East, recorded at EastWest Studios in Los Angeles with guests including Eric Clapton and flutist Hubert Laws.

He's 70 now, with more than 2,000 recording credits behind him and no sign of the session calls slowing down, a career built less around a signature sound of his own than around being the person everyone else wanted in the room.

East's playing sits on a foundation of upright-bass jazz lineage, most directly Charles Mingus and Ray Brown, whose influence pulled him toward the instrument at fourteen. That formal grounding, reinforced by a music degree from UC San Diego, is what separates his career from a purely commercial "smooth jazz" format player: he built his reputation inside a genuine improvising jazz combo (Fourplay) at the same time he was writing and playing on mainstream pop and R&B records. His session work spans genres by design, prized for a clean, melodic, groove-forward bass approach that serves the song rather than showcasing technique, equally at home behind a Grammy-winning EDM single, a chart-topping soul ballad, or a Contemporary Jazz Albums No. 1.