This was followed up with Uomo di pezza in 1972, which topped the Italian charts. Thanks to its promotion through the RAI radio program Per voi giovani, the album was quickly successful, earning a top 10 placing in the Italian charts. In the spring of 1971 Le Orme recorded their second studio album, Collage. An evolution in their sound towards more richness and complexity can already be heard in a non-album single the band would publish in 1970, "Il Profumo delle Viole / I Ricordi Più Belli". Not long later Smeraldi left as well, leaving the trio that would be at the core of the band for its most successful era. Soon Galieti left for the military as well, leaving Tagliapietra to cover on bass guitar. It was then re-used in the Oceans Eleven soundtrack, where it features prominently in the final scene. The title track, was sampled by Irish DJ David Holmes for his 2000 album Bow Down to the Exit Sign, under the name "69 Police". Later in the same year, the band began recording its first album, Ad gloriam, to be released in 1969.
It was at this time that Tony Pagliuca (formerly of Hopopi and I Delfini ) joined the group on keyboards. The following year, their second single, "Senti l'estate che torna", was chosen to participate in Un disco per l'estate, a televised music competition organised by the Italian Phonographic Association and RAI. He was quickly replaced by Michi Dei Rossi of the dissolved Hopopi.
In 1967, the day after recording their first single, "Fiori e Colori", for Milan's CAR Juke Box label (having been rejected by EMI), Rebeschini left for the military. One of their first major performances was on 2 June 1966, when they and other local bands accompanied a British beat group, The Rokes, at the Teatre Corso in Mestre. The band's early work evoked a feel somewhere between beat and psychedelic rock, similar to what was coming out of the United Kingdom at the time. Originally intending to name themselves Le Ombre, a literal translation of The Shadows, they ultimately decided on the similar-sounding Le Orme. Le Orme was founded in 1966 in Venice by Aldo Tagliapietra (vocals, guitar), Marino Rebeschini (drums), Nino Smeraldi (lead guitar) and Claudio Galieti (bass guitar).