three contacted Stills, who, putting aside the differences that led to CSNY's initial demise, cut short his honeymoon break with Sanson to join the new project. CSNY worked for several weeks in both Maui and Los Angeles on the project, Human Highway, but these sessions were ultimately aborted due to various disagreements within the band. Stills was greeted by several sources of turmoil upon returning from the Human Highway sessions to regroup Manassas, as, in addition to Hillman's future commitment to work with Furay and Souther, Dallas Taylor had become severely addicted to heroin, and Calvin Samuels had left the band for personal reasons. Stills dealt with these issues by securing the services of Jefferson Airplane drummer John Barbata (who had previously replaced Taylor in CSNY during their 1970 tour and Kenny Buttrey during Young's 1973 tour) as a backup for Taylor, and bassist Kenny Passarelli of Joe Walsh's band Barnstorm to replace Samuels. Samuels would return to the band for the last leg of its 1973 tour. Following the tour's completion in October, Manassas's dissolution was publicly announced. One of Manassas' last shows, at San Francisco's Winterland Ballroom in early October 1973, was made notable by the band's being joined onstage by first David Crosby and Graham Nash, and, later in the show, by Neil Young. When later asked about this occurrence, Chris Hillman would comment "I could smell a CSNY reunion." CSNY would, in fact, regroup for a world tour in early 1974. Following this tour, Stephen Stills would start a new band in 1974 with Kenny Passarelli and Joe Lala, but this was short-lived; Passarelli would soon depart to join the Elton John Band, and Lala would subsequently leave as well. Chris Hillman's Souther-Hillman-Furay Band, which would also include Manassas members Al Perkins and Paul Harris (and eventually Joe Lala, who also played on the 1974 CSNY reunion tour), released its first album in early 1974. Legacy Criteria Studios engineer Howard Albert has said "Manassas was one of the greatest and the most underrated bands of the seventies. That double album, along with Eric Clapton's Layla – which me and [Ron Albert] both worked on – stand as the most important and best albums we've ever been a part of." Of the band's prowess on stage, Stephen Stills has said "Manassas was such a terrific band. It really had some structure and reminded me of [Stills' previous