He decided on talented London musicians Frank Bennett on vocals, Ron Regan on bass, Keith Giles (ex Him & The Others) on drums, Alan Ward on organ and Barry Clark on lead guitar.
Originally Danny didn't want to be part of the band but as they all got on well together the other guys persuaded him to join them

They released three singles as Fortes Mentum.
Despite a good following, the band never made any money although they performed all over London and the UK.

In March 1969 they were offered a unique opportunity to work in Germany. Unfortunately Alan and Barry had very good 'day jobs' and they didn't want to give them up.
They were replaced by Rod Creasy on keyboards and Paul Coles on lead guitar.

This line up worked the famous Top 10 Club in Hamburg and the K52 Club in Frankfurt. It was at the Starlight Ballroom later on that Frank and Danny had a falling out. Danny decided to pursue his career in songwriting and so left the band. Bob Flag (ex-Riot Squad) joined on saxophone and flute.
After further lineup changes, Fortes Mentum disbanded around a year later due to lack of gigs.

Fortes Mentum Mark l Musicians
Ron Regan - Bass Player
Frank Bennett - Vocals
Barry Clark - Lead Guitar
Alan Ward - Organist
Keith Giles - Drums /Vocals
Danny Beckerman (Deceased 2006) - Piano/Song Writer

Fortes Mentum Mark ll Musicians
Ron Regan - Bass Player
Frank Bennett - Vocals
Keith Giles - Drums /Vocals
Rod Creasy (Deceased 2005) - Organ
Bob Flag - (ex Riot Squad) - Sax/Flute/Song Writer
Stuart Wicks - Organ
Tony McGill - Lead Guitar
Paul Coles - Lead Guitar (Germany only)